soc/amd/stoneyridge: Add northbridge support

Copy northbridge files from northbridge/amd/pi/00670F00
to soc/amd/stoneyridge and soc/amd/common.

Changes:
- update chip_ops and device_ops
- remove multi-node support
- clean up Kconfig and Makefile

Change-Id: Ie86b4d744900f23502068517ece5bcea6c128993
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/19724
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

0 files changed, 0 insertions, 0 deletions