boards: nordic: nrf9280pdk: correct board documentation

Remove parts of the documentation for the nrf9280pdk board
that were copy-pasted and added by mistake.

Signed-off-by: Emanuele Di Santo <emdi@nordicsemi.no>

boards/nordic/nrf9280pdk/doc/index.rst

@@ -11,45 +11,21 @@ Overview
    All software for the nRF9280 SiP is experimental and hardware availability
    is restricted to the participants in the limited sampling program.
 
-The nRF9280 DK is a single-board development kit for evaluation and development
+The nRF9280 PDK is a single-board development kit for evaluation and development
 on the Nordic nRF9280 System-in-Package (SiP).
 
-The nRF9280 is a multicore SiP with:
-
-* an Arm Cortex-M33 core with DSP instructions, FPU, and Armv8-M Security
-  Extensions, running at up to 320 MHz, referred to as the **application core**
-* an Arm Cortex-M33 core with DSP instructions, FPU, and Armv8-M Security
-  Extensions, running at up to 256 MHz, referred to as the **radio core**.
-
 The ``nrf9280pdk/nrf9280/cpuapp`` board target provides support for
 the application core on the nRF9280 SiP.
-The ``nrf9280pdk/nrf9280/cpurad`` board target provides support for
-the radio core on the nRF9280 SiP.
-The ``nrf9280pdk/nrf9280/cpuppr`` board target provides support for
-the PPR core on the nRF9280 SiP.
 
 nRF9280 SiP provides support for the following devices:
 
-* :abbr:`ADC (Analog to Digital Converter)`
-* CLOCK
 * :abbr:`GPIO (General Purpose Input Output)`
-* :abbr:`GRTC (Global real-time counter)`
-* :abbr:`I2C (Inter-Integrated Circuit)`
-* MRAM
-* :abbr:`PWM (Pulse Width Modulation)`
-* RADIO (Bluetooth Low Energy and 802.15.4)
-* :abbr:`SPI (Serial Peripheral Interface)`
 * :abbr:`UART (Universal asynchronous receiver-transmitter)`
-* :abbr:`USB (Universal Serial Bus)`
-* :abbr:`WDT (Watchdog Timer)`
 
 Hardware
 ********
 
-nRF9280 DK has two crystal oscillators:
+The nRF9280 PDK has four programmable LEDs, four programmable buttons, and one reset button.
-
-* High-frequency 32 MHz crystal oscillator (HFXO)
-* Low-frequency 32.768 kHz crystal oscillator (LFXO)
 
 Supported Features
 ==================
@@ -62,56 +38,8 @@ hardware features:
 +===========+============+======================+
 | GPIO      | on-chip    | gpio                 |
 +-----------+------------+----------------------+
-| GRTC      | on-chip    | system clock         |
-+-----------+------------+----------------------+
-| I2C(M)    | on-chip    | i2c                  |
-+-----------+------------+----------------------+
-| PWM       | on-chip    | pwm                  |
-+-----------+------------+----------------------+
-| SPI(M/S)  | on-chip    | spi                  |
-+-----------+------------+----------------------+
 | UART      | on-chip    | serial               |
 +-----------+------------+----------------------+
-| WDT       | on-chip    | watchdog             |
-+-----------+------------+----------------------+
-
-The ``nrf9280pdk/nrf9280/cpurad`` board target supports the following
-hardware features:
-
-+-----------+------------+----------------------+
-| Interface | Controller | Driver/Component     |
-+===========+============+======================+
-| GPIO      | on-chip    | gpio                 |
-+-----------+------------+----------------------+
-| GRTC      | on-chip    | system clock         |
-+-----------+------------+----------------------+
-| I2C(M)    | on-chip    | i2c                  |
-+-----------+------------+----------------------+
-| SPI(M/S)  | on-chip    | spi                  |
-+-----------+------------+----------------------+
-| UART      | on-chip    | serial               |
-+-----------+------------+----------------------+
-| WDT       | on-chip    | watchdog             |
-+-----------+------------+----------------------+
-
-The ``nrf9280pdk/nrf9280/cpuppr`` board target supports the following
-hardware features:
-
-+-----------+------------+----------------------+
-| Interface | Controller | Driver/Component     |
-+===========+============+======================+
-| GPIO      | on-chip    | gpio                 |
-+-----------+------------+----------------------+
-| GRTC      | on-chip    | system clock         |
-+-----------+------------+----------------------+
-| I2C(M)    | on-chip    | i2c                  |
-+-----------+------------+----------------------+
-| SPI(M/S)  | on-chip    | spi                  |
-+-----------+------------+----------------------+
-| PWM       | on-chip    | pwm                  |
-+-----------+------------+----------------------+
-
-Other hardware features have not been enabled yet for this board.
 
 Connections and IOs
 ===================
@@ -136,9 +64,8 @@ Push buttons
 Programming and Debugging
 *************************
 
-Applications for both the ``nrf9280pdk/nrf9280/cpuapp`` and
+Applications for the ``nrf9280pdk/nrf9280/cpuapp`` board target can be built,
-``nrf9280pdk/nrf9280/cpurad`` board targets can be built, flashed,
+flashed, and debugged in the usual way. See :ref:`build_an_application`
-and debugged in the usual way. See :ref:`build_an_application`
 and :ref:`application_run` for more details on building and running.
 
 Flashing
@@ -151,9 +78,9 @@ Follow the instructions in the :ref:`nordic_segger` page to install
 and configure all the necessary software. Further information can be
 found in :ref:`nordic_segger_flashing`.
 
-To build and program the sample to the nRF9280 DK, complete the following steps:
+To build and program the sample to the nRF9280 PDK, complete the following steps:
 
-1. Connect the nRF9280 DK to your computer using the IMCU USB port on the DK.
+1. Connect the nRF9280 PDK to your computer using the IMCU USB port on the PDK.
 #. Build the sample by running the following command:
 
    .. zephyr-app-commands::
@@ -161,7 +88,7 @@ To build and program the sample to the nRF9280 DK, complete the following steps:
       :board: nrf9280pdk/nrf9280/cpuapp
       :goals: build flash
 
-Testing the LEDs and buttons in the nRF9280 DK
+Testing the LEDs and buttons in the nRF9280 PDK
 ***********************************************
 
 There are 2 samples that allow you to test that the buttons (switches) and LEDs