[S] Change in coreboot[main]: soc/intel/xeon_sp: Remove unlock_pam_regions

[Patrick Rudolph (Code Review)]

Attention is currently required from: Christian Walter, Johnny Lin, Jonathan Zhang, Lean Sheng Tan, Shuo Liu, Tim Chu.

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81349?usp=email )

Change subject: soc/intel/xeon_sp: Remove unlock_pam_regions
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Patch Set 4:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/81349/comment/2fc23e9b_1b19e924 :
PS3, Line 9: unlock_pam_regions
> I'm a bit hesitate to restore CPX codes here, since that means we need to add this step back into th […]

Looking at FSP source it looks like this is necessary only on SKX/CPX. Moving it to CPX is fine for me.