Fix GPU voltage

Conflicts:
	arch/arm/configs/next_intelli_defconfig
	arch/arm/mach-tegra/tegra_pmqos.h
expose EDP to make it configurable
ref : https://github.com/lyapota/enru-3.1.10-g7f360be/commit/1fcd73216f980973e5d082b69af7e166ee084046