soc/amd/picasso/sb: Gate FCH AL2AHB clocks

Gate the A-Link to AHB Bridge clocks to save power. These
are internal clocks and are unneeded for Raven/Picasso.
This was previously performed within the AGESA FSP but this
change relocates it into coreboot.

BUG=b:154144239
TEST=Check AL2AHB clock gate bits at the end of POST before and
after change with HDT.

Change-Id: Ifcbc144a8769f8ea440cdd560bab146bf5058cf9
Signed-off-by: Matt Papageorge <matthewpapa07@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42829
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

0 files changed, 0 insertions, 0 deletions