Change in coreboot[master]: soc/intel/cmn/lockdown: Perform SA lockdown configuration

[Subrata Banik (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Nick Vaccaro, Arthur Heymans.
Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63518 )

Change subject: soc/intel/cmn/lockdown: Perform SA lockdown configuration
......................................................................

Patch Set 11:

(1 comment)

Patchset:

PS11:
> SOC_INTEL_COMMON_PCH_BASE also includes icelake, skylake and xeon_xp, would be good to note that this enforces SA lockdown config for those as well

Sure, it's enforcing ICL and SKL but Xeon_xp doesn't select `SOC_INTEL_COMMON_BLOCK_SA` Kconfig hence, added check to avoid compilation issue https://review.coreboot.org/c/coreboot/+/63518/11/src/soc/intel/common/pch/l...