sb/intel/bd82x6x: Rework PCH ID cache

Work around a romstage restriction. Globals (or static variables) cannot
be initialized to a non-zero value because there's no data section. Note
that the revision ID for stepping A0 is zero, so `pch_silicon_revision`
will no longer use the cached value for this PCH stepping. Since it is a
pre-production stepping, it is most likely not used anywhere anymore.

Change-Id: I07663d151cbc2d2ed7e4813bf870de52848753fd
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49168
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>

0 files changed, 0 insertions, 0 deletions