soc/amd/common: Add framework for missing AGESA callouts

These are required callout functions that currently are not implemented.
agesa_LateRunApTask does not seem to be called, but the others are.

BUG=b:66690176
TEST=Build Kahlee.  Tested in next commit.

Change-Id: Iee5f9c4847a5309a25045fca8c73be4f811c281a
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/21707
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2 files changed