[XS] Change in coreboot[master]: soc/intel/meteorlake: Exclude CBMEM region from TME encryption

[Subrata Banik (Code Review)]

Attention is currently required from: Jakub Czapiga, Kapil Porwal, Pratikkumar V Prajapati, Tarun Tuli.

Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/75909?usp=email )

Change subject: soc/intel/meteorlake: Exclude CBMEM region from TME encryption
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Patch Set 8:

(1 comment)

Patchset:

PS4:
> Lets keep it separate, considering separate tests performed which is already detailed in commit message for both of these patches.

I don't see a point of having two CL (for same SOC) to enable configs which are interdependent. Assume those cls are landing separately and ended up adding into two different CPFE (by the builder) releases, then there would be one CPFE where CBMEM ranges (cbmem -c/-t, ramoops) are all encrypted and unable to access those range. The condition would be worse if ODM/OEM picked such CPFE for their SMT.

It would create unnecessarily trouble by the end of the day.