Synch to upstream aa041a28

merge using GH web GUI

Synch up to upstream https://github.com/mcu-tools/mcuboot/commit/aa041a282d01eca2d427d9bb95ae9aecd9d2aa66



- Added workflow verifying integration with the Zephyr
- removed deprecated DT_CHOSEN_ZEPHYR_FLASH_CONTROLLER_LABEL
- Fixed usage of CONFIG_LOG_IMMEDIATE 

Signed-off-by: Marek Pieta <Marek.Pieta@nordicsemi.no>