boot: zephyr: board: stm32h573i_dk: Add support for ext_flash_app variant#2500

nordicjm merged 1 commit intomcu-tools:mainmcu-tools/mcuboot:mainfrom

tpambor:stm32h573i_dk_ext_flashtpambor/mcuboot:stm32h573i_dk_ext_flashCopy head branch name to clipboard