msm_fb: Update from protou
Update to KK-2.7 KGSL

Thanks @RonGokhale!
remove acpuclock_oc.c
this file isn't needed anymore, as @joilaroi implemented this in acpuclock-7201.c

Change-Id: I5b2d92f12c457f4ae6fa85a85147d72a0739979d