Change in coreboot[master]: ec/google: Notify DPTF driver power participant on PD event

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Varshit B Pandya, Subrata Banik, Rizwan Qureshi.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62946 )

Change subject: ec/google: Notify DPTF driver power participant on PD event
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Patch Set 11:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62946/comment/f0c859fd_c1fdda88 
PS11, Line 8: 
            : The DPTF power participant device needs to be notified when
            : power source changes so it can re-evaluate power source and
            : power source change count, this can be later used by DPTF along
            : with methods provided by EC.
What policy uses this notification?

File src/ec/google/chromeec/acpi/ec.asl:

https://review.coreboot.org/c/coreboot/+/62946/comment/a23d3039_3e924a36 
PS11, Line 87: PBOK, 8,	// Power source change count from dptf
where is the corresponding change in the EC code?