[L] Change in coreboot[master]: soc/intel/cmd/block/cse: Store CSE version in CMOS memory

[Dinesh Gehlot (Code Review)]

Attention is currently required from: Subrata Banik, Paul Menzel, Kapil Porwal, Sridhar Siricilla.

Dinesh Gehlot has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74995 )

Change subject: soc/intel/cmd/block/cse: Store CSE version in CMOS memory
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Patch Set 20:

(1 comment)

File src/soc/intel/common/block/cse/cse_lite.c:

https://review.coreboot.org/c/coreboot/+/74995/comment/e475405a_599c2512 
PS9, Line 1233: write current ISH version to CBMEM memory.
> Do you mean system takes more time to access the CMOS than CBMEM?  […]

CMOS memory is persistent over reboot, that helps to retain the ISH version.
CBMEM memory is volatile memory and comparatively faster. For this reason, we use CBMEM stored ISH version for the user-exposed API.