When we have wide color gamut content, SurfaceFlinger might want to send a
PowerHint through Power Hal to boost GPU to higher frequency, to make sure GPU
composition can finish in time.

BUG: 110112323
Test: adb shell cat /sys/class/kgsl/kgsl-3d0/devfreq/cur_freq
Change-Id: If60c13aedc4ff84eaefd3430794dc15a478c5a73