Overclock: add ultimate edition to allow quadcore up to 1.55 GHz

Also add Tegra3 Gaming Fix to disallow 1 single core to have higher
frequecy than rest

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