powerhint: fork powerhint.json for pantah

Move the powerhint.json from gs201 to pantah.
Separate powerhint.json for each device.

Test: build and manually check
Bug: 207573241
Change-Id: I32d9093e48ca5f62cf0d05ec43a8b77b99ed254d
Merged-In: I32d9093e48ca5f62cf0d05ec43a8b77b99ed254d
8 files changed