doc: release-3.2: note on removal of deprecated work queue API

This adds a note about removal of deprecated work queue API.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

doc/releases/release-notes-3.2.rst

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+:orphan:
+
+.. _zephyr_3.2:
+
+Zephyr 3.2.0 (Working Draft)
+############################
+
+The following sections provide detailed lists of changes by component.
+
+Security Vulnerability Related
+******************************
+
+Known issues
+************
+
+API Changes
+***********
+
+Changes in this release
+=======================
+
+Removed APIs in this release
+============================
+
+* The following functions, macros, and structures related to the
+  deprecated kernel work queue API have been removed:
+
+  * ``k_work_pending()``
+  * ``k_work_q_start()``
+  * ``k_delayed_work``
+  * ``k_delayed_work_init()``
+  * ``k_delayed_work_submit_to_queue()``
+  * ``k_delayed_work_submit()``
+  * ``k_delayed_work_pending()``
+  * ``k_delayed_work_cancel()``
+  * ``k_delayed_work_remaining_get()``
+  * ``k_delayed_work_expires_ticks()``
+  * ``k_delayed_work_remaining_ticks()``
+  * ``K_DELAYED_WORK_DEFINE``
+
+Deprecated in this release
+==========================
+
+Stable API changes in this release
+==================================
+
+New APIs in this release
+========================
+
+Kernel
+******
+
+Architectures
+*************
+
+* ARM
+
+  * AARCH32
+
+  * AARCH64
+
+* Xtensa
+
+Bluetooth
+*********
+
+* Audio
+
+* Direction Finding
+
+* Host
+
+* Mesh
+
+* Controller
+
+* HCI Driver
+
+Boards & SoC Support
+********************
+
+* Added support for these SoC series:
+
+* Removed support for these SoC series:
+
+* Made these changes in other SoC series:
+
+* Changes for ARC boards:
+
+* Added support for these ARM boards:
+
+* Added support for these ARM64 boards:
+
+* Removed support for these ARM boards:
+
+* Removed support for these X86 boards:
+
+* Added support for these RISC-V boards:
+
+* Made these changes in other boards:
+
+* Added support for these following shields:
+
+
+Drivers and Sensors
+*******************
+
+* ADC
+
+* CAN
+
+* Counter
+
+* DAC
+
+* Disk
+
+* DMA
+
+* EEPROM
+
+* Entropy
+
+* Ethernet
+
+* Flash
+
+* GPIO
+
+* I2C
+
+* I2S
+
+* Interrupt Controller
+
+* MBOX
+
+* MEMC
+
+* Pin control
+
+* PWM
+
+* Sensor
+
+* Serial
+
+* SPI
+
+* Timer
+
+* USB
+
+* Watchdog
+
+Networking
+**********
+
+USB
+***
+
+Build and Infrastructure
+************************
+
+Libraries / Subsystems
+**********************
+
+HALs
+****
+
+MCUboot
+*******
+
+Trusted Firmware-m
+******************
+
+Documentation
+*************
+
+Tests and Samples
+*****************
+
+Issue Related Items
+*******************
+
+These GitHub issues were addressed since the previous 3.1.0 tagged
+release: