feat(auth): add explicit entries for key OIDs

Key-OIDs that authenticate BL31, BL31(SOC)-FW config, and HW config
images have been explicitly entered.
Implementations of signer-ID consume these entries.

Change-Id: I24c9085ed5f266af06d40fb73302e35d857a9d5b
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
3 files changed