feat(stm32mp1): add a check on TRUSTED_BOARD_BOOT with secure chip

Add a security check to enforce the usage of TRUSTED_BOARD_BOOT
on closed device. It will guarantee the secure bootchain.

Change-Id: Id6120d0e5041e8f2d3866e5710876ec96b6d0216
Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com>
1 file changed