boards: nordic: nrf54hl: add retained_mem to supported features

Doc and .yaml descriptions shall mention retained_mem
in supported features on affected boards.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>

boards/nordic/nrf54h20dk/doc/index.rst

@@ -39,6 +39,7 @@ nRF54H20 SoC provides support for the following devices:
 * :abbr:`GPIO (General Purpose Input Output)`
 * :abbr:`GRTC (Global real-time counter)`
 * :abbr:`I2C (Inter-Integrated Circuit)`
+* MEMCONF
 * MRAM
 * :abbr:`PWM (Pulse Width Modulation)`
 * RADIO (Bluetooth Low Energy and 802.15.4)
@@ -70,6 +71,8 @@ hardware features:
 +-----------+------------+----------------------+
 | I2C(M)    | on-chip    | i2c                  |
 +-----------+------------+----------------------+
+| MEMCONF   | on-chip    | retained_mem         |
++-----------+------------+----------------------+
 | SPI(M/S)  | on-chip    | spi                  |
 +-----------+------------+----------------------+
 | UART      | on-chip    | serial               |
@@ -89,6 +92,8 @@ hardware features:
 +-----------+------------+----------------------+
 | I2C(M)    | on-chip    | i2c                  |
 +-----------+------------+----------------------+
+| MEMCONF   | on-chip    | retained_mem         |
++-----------+------------+----------------------+
 | SPI(M/S)  | on-chip    | spi                  |
 +-----------+------------+----------------------+
 | UART      | on-chip    | serial               |

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp_0_9_0.yaml

@@ -19,6 +19,7 @@ supported:
   - gpio
   - i2c
   - pwm
+  - retained_mem
   - spi
   - watchdog
   - usbd

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad_0_9_0.yaml

@@ -16,4 +16,5 @@ supported:
   - counter
   - gpio
   - pwm
+  - retained_mem
   - spi

boards/nordic/nrf54l15dk/doc/index.rst

@@ -19,6 +19,7 @@ nRF54L15 Arm Cortex-M33 CPU and the following devices:
 * RRAM
 * :abbr:`GPIO (General Purpose Input Output)`
 * :abbr:`TWIM (I2C-compatible two-wire interface master with EasyDMA)`
+* MEMCONF
 * :abbr:`MPU (Memory Protection Unit)`
 * :abbr:`NVIC (Nested Vectored Interrupt Controller)`
 * :abbr:`PWM (Pulse Width Modulation)`
@@ -60,6 +61,8 @@ hardware features:
 +-----------+------------+----------------------+
 | GRTC      | on-chip    | counter              |
 +-----------+------------+----------------------+
+| MEMCONF   | on-chip    | retained_mem         |
++-----------+------------+----------------------+
 | MPU       | on-chip    | arch/arm             |
 +-----------+------------+----------------------+
 | NVIC      | on-chip    | arch/arm             |

boards/nordic/nrf54l15pdk/doc/index.rst

@@ -20,6 +20,7 @@ the following devices:
 * RRAM
 * :abbr:`GPIO (General Purpose Input Output)`
 * :abbr:`TWIM (I2C-compatible two-wire interface master with EasyDMA)`
+* MEMCONF
 * :abbr:`MPU (Memory Protection Unit)`
 * :abbr:`NVIC (Nested Vectored Interrupt Controller)`
 * :abbr:`PWM (Pulse Width Modulation)`
@@ -65,6 +66,8 @@ hardware features:
 +-----------+------------+----------------------+
 | TWIM      | on-chip    | i2c                  |
 +-----------+------------+----------------------+
+| MEMCONF   | on-chip    | retained_mem         |
++-----------+------------+----------------------+
 | MPU       | on-chip    | arch/arm             |
 +-----------+------------+----------------------+
 | NVIC      | on-chip    | arch/arm             |