Revert "Add GPU clock control. Allows users to overclock this GPU as much as their device handles (higher than 800MHz is unheard off since stock is 416MHz). It scales all the approriate busses and clocks accordingly so that we get a real overclock improvement and not fake omfgover9000 performance. It increases VDE voltages in 3 steps depending on how high the GPU max clocks are set by the users."

This reverts commit 64483862ce06eb79609c6cc7f69769108c72d628.
Overclocking: enable CPU overclocking

this is done via speedo id hax by forcing Nexus 7 Tegra3  to identify as
AP33 variant instead of as T33
tegra: custom user voltage control

initial implementation inspired by coolbho3k's custom voltage control for
galaxy nexus (OMAP4460)

also added some Processor ID debugging code to properly identify tegra3
variants

Conflicts:
	arch/arm/mach-tegra/tegra3_dvfs.c
Fix build
Overclocking: GPU overclocking from 416MHz to 520Mhz

Conflicts:
	arch/arm/mach-tegra/tegra3_dvfs.c