southbridge/amd: Update Kconfig and makefiles for 00670F00

Add Stoney specific code subtree and fix Makefles and Kconfig files.
Author: Charles Marslett <charles@scarlettechnologies.com>

Original-Signed-off-by: Marc Jones <marcj303@gmail.com>
Original-Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Original-Tested-by: Marshall Dawson <marshalldawson3rd@gmail.com>
(cherry picked from commit c3a469d11e4676b3b63d11a30955113291d00ec8)

Change-Id: Ic4d97a3745f7fc5a637ae6da17a9009b9757136e
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/17217
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
2 files changed