vc/amd/00670F00: Introduce S3FinalRestore helper

The Arch2008 spec describes an AmdS3FinalRestore Entry Point that
coreboot has been missing.  Add the helper function that can call
into the blob to execute this.

BUG=b:69614064

Change-Id: Ic72feb0406cd1d0d5c23e391c2464e12c9e10007
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/23442
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed