plat: imx8mm: Enable Trusted Boot

This patch enables Trusted Boot on the i.MX8MM with BL2 doing image
verification from a FIP prior to hand-over to BL31.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
Change-Id: I3c22783a5c49544d0bace8ef3724784b9b7cc64a
2 files changed