[nrf fromlist] bootloader: mcuboot: Changes needed to support AES256#3103

nordicjm merged 2 commits intonrfconnect:mainnrfconnect/sdk-zephyr:mainfrom

ahasztag:NCSDK-34141_aes256_supportahasztag/sdk-zephyr:NCSDK-34141_aes256_supportCopy head branch name to clipboard