soc/amd/stoneyridge: Add I2C support

BUG=b:69416132
BRANCH=none
TEST=make

Change-Id: Id940af917c9525aba7bc25eea0821f5f36a36653
Signed-off-by: Chris Ching <chingcodes@chromium.org>
Reviewed-on: https://review.coreboot.org/22959
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
5 files changed