Change in coreboot[master]: soc/intel/cmn/{block, pch}: Migrate GPMR driver

[Wonkyu Kim (Code Review)]

Attention is currently required from: Subrata Banik, Ravishankar Sarawadi, Angel Pons, Nick Vaccaro, Tim Wawrzynczak.
Wonkyu Kim has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/63471 )

Change subject: soc/intel/cmn/{block, pch}: Migrate GPMR driver
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Patch Set 13:

(2 comments)

File src/soc/intel/common/block/lpc/lpc_lib.c:

https://review.coreboot.org/c/coreboot/+/63471/comment/602881cb_7b23f0bf 
PS13, Line 29: gpmr_write32
> This write was changed from 16 bits to 32 bits, is it OK?

Register offset is 4 byte aligned. So it's ok to use 32bit access.

https://review.coreboot.org/c/coreboot/+/63471/comment/cdbc0535_2baa7610 
PS13, Line 47: gpmr_write32
> Ditto.

Register offset is 4 byte aligned. So it's ok to use 32bit access.