feat(rd1ae): add support for OP-TEE SPMC

Add support for loading and booting OP-TEE as SPMC running at
S-EL1 for RD-1 AE platform.

Signed-off-by: Ziad Elhanafy <ziad.elhanafy@arm.com>
Change-Id: If29f56bb19fe7f370208ef5a6f60bfff4346ea93
7 files changed