GPU: Tweak GPU scaling low/med/high values

Change-Id: I0e4c7631e76df52ed761f5cf06bff0b05a5deb0e
GPU: Revert tweaks to GPU Governing

Change-Id: I148a18e36b6fd95a0e65537951fe9e875c3a47fb
Tweak GPU OC to try and save some battery and get better performance

Change-Id: Ib19159d6dfeb605234be633df3ec3b167fd9cf08
tweak GPU bus

Change-Id: I7d0cef37342aa80d76a4e043f1e048cacf15709f