Change in coreboot[master]: mb/google/volteer/variants/drobit: Modify touchpad power sequence

[Wayne3 Wang (Code Review)]

Attention is currently required from: Hank Lin, Paul Menzel, Ken Lu, Zhuohao Lee.
Wayne3 Wang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51514 )

Change subject: mb/google/volteer/variants/drobit: Modify touchpad power sequence
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Patch Set 1:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/51514/comment/8baf05c7_851f13d8 
PS1, Line 9: Modify power sequence of touchpad to meet the definition in the spec.
> What is exactly defined in the specification?

Our EE provided TP-power timing spec, waveforms of cold boot and warm boot. Please 
refer to the below issue tracker. Thank you.
https://partnerissuetracker.corp.google.com/issues/178353432