feat(spmd): avoid spoofing in FF-A direct request

Validate that non-secure caller does not spoof
SPMD, SPMC or any secure endpoint ID
in FFA_MSG_SEND_DIRECT_REQ.

Change-Id: I7eadb8886142d94bef107cf485462dfcda828895
Signed-off-by: Shruti <shruti.gupta@arm.com>
1 file changed