include/dfu/mcuboot: BOOT_MAX_ALIGN defined conditionally
include/dfu/mcuboot: BOOT_MAX_ALIGN defined conditionally

BOOT_MAX_ALIGN	is originally provided in bootutil_public.h mcuboot's
header.

Signed-off-by: Andrzej Puzdrowski <0222c24e1773dd88269ed0e559909ec9bea3604a@nordicsemi.no>

zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr