Revert "power: remove cpufreq resets"

This reverts commit 304449f90c584d951167424f255a384bb5cfd9ab.
power_grouper: update to remove hardcoded screen on/off frequencies

Change-Id: I6ec7c49d93a576bea13e6078db7bacb389ae976c

power/power.c: fixed derped logic

Change-Id: Iedf49feffe7fdd00b6ad7ac8b30a0e2acac16003