Change in coreboot[master]: soc/intel/common: Implement power-failure-state handling

[Furquan Shaikh (Code Review)]

Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/34724 )

Change subject: soc/intel/common: Implement power-failure-state handling
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Patch Set 4:

(1 comment)

https://review.coreboot.org/c/coreboot/+/34724/4/src/soc/intel/common/block/... 
File src/soc/intel/common/block/pmc/pmclib.c:

https://review.coreboot.org/c/coreboot/+/34724/4/src/soc/intel/common/block/... 
PS4, Line 602: state == MAINBOARD_POWER_STATE_ON
> For the moment, yes. I tried to keep it close to the current behavior […]

Current behavior is if CONFIG_MAINBOARD_POWER_FAILURE_STATE is set to MAINBOARD_POWER_STATE_PREVIOUS, then the code just leaves the AFTERG3 bit untouched. But, I see that the meaning of MAINBOARD_POWER_STATE_PREVIOUS isn't supposed to be that based on CB:34728.

It makes sense to squash the two CLs together since it is easier to see what the overall logic is.