doc: release: 3.3: Add note on Nordic board scratch changes
Adds a note on the removal of scratch partitions from Nordic
development boards.
@@ -215,6 +215,30 @@ Boards & SoC Support
* Removed support for these Xtensa boards:
+* Made these changes in ARM boards:
+
+ * The scratch partition has been removed for the following Nordic boards and
+ flash used by this area re-assigned to other partitions to free up space
+ and rely upon the swap-using-move algorithm in MCUboot (which does not
+ suffer from the same faults or stuck image issues as swap-using-scratch
+ does):
+ ``nrf21540dk_nrf52840``
+ ``nrf51dk_nrf51422``
+ ``nrf51dongle_nrf51422``
+ ``nrf52833dk_nrf52833``
+ ``nrf52840dk_nrf52811``
+ ``nrf52840dk_nrf52840``
+ ``nrf52840dongle_nrf52840``
+ ``nrf52dk_nrf52805``
+ ``nrf52dk_nrf52810``
+ ``nrf52dk_nrf52832``
+ ``nrf5340dk_nrf5340``
+ ``nrf9160dk_nrf52840``
+ ``nrf9160dk_nrf9160``
+
+ Note that MCUboot and MCUboot image updates from pre-Zephyr 3.3 might be
+ incompatible with Zephyr 3.3 onwards and vice versa.
+
* Made these changes in other boards:
* Added support for these following shields:
