gpu: overclock: gpu overclocking to 487.5 MHz

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	arch/arm/mach-msm/Kconfig

Conflicts:
	arch/arm/mach-msm/Kconfig
gpu: overclock: add 450 MHz option

Signed-off-by: Paul Reioux <reioux@gmail.com>
gpu: overclock: reduce ib requests for OC freq

this fixes the camera buffer overflow due to bw starvation of VFE

Signed-off-by: Paul Reioux <reioux@gmail.com>
ak_mako_defconfig: enable GPU_OVERCLOCK, disable GPU_OVERCLOCK_450
Kernel Version: AK.224.KK