soc/amd/stoneyridege: Create AP jump structure

As part of moving AGESA calls from bootblock to romstage, create
infrastructure to pass a pointer to the AP cores, so they can jump directly
to romstage.

BUG=b:74236170
TEST=Build and boot grunt, actual test will be performed at a later patch.

Change-Id: If716d1c1970746f2ad90ef71ae9062c99f219897
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/25526
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
5 files changed