[M] Change in coreboot[main]: soc/intel/xeon_sp/smihandler: Lock SMM_FEATURE_CONTROL on all sockets

[Patrick Rudolph (Code Review)]

Attention is currently required from: Christian Walter, Johnny Lin, Morgan Jang, Shuo Liu, Tim Chu.

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/80247?usp=email )

Change subject: soc/intel/xeon_sp/smihandler: Lock SMM_FEATURE_CONTROL on all sockets
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Patch Set 1: Code-Review-1

(1 comment)

Patchset:

PS1: 
Needs CB:80091 to properly detect all UBOX devices.