[PATCH] KGSL: Simple Governor: so I kinda butchered in a good way of
 course the original code from faux, but the simplicity is still here. Added
 an history so that we can track the average do that the frequency scaling is
 much more proporcional to the actual GPU load rather than having is ramp up
 every now and then due to spurious load spike. Also remove two useless ifs.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/gpu/msm/kgsl_pwrscale_trustzone.c