Rework Overclocking and voltage

Conflicts:
	arch/arm/mach-exynos/cpufreq-4x12.c
	drivers/misc/cpu_undervolting.c

	modified:   arch/arm/configs/custom_t0lte_defconfig
defconfig: replaced old defconfig with new one
	modified:   arch/arm/mach-exynos/cpufreq-4x12.c
reworked OC and voltage
	new file:   drivers/misc/cpu_undervolting.c reworked
OC and voltage
GPU OC 700MHz

Conflicts:
	arch/arm/mach-exynos/clock-exynos4212.c
	drivers/gpu/mali400/r3p2/mali/platform/pegasus-m400/exynos4_pmm.c
	drivers/media/video/samsung/mali/linux/mali_kernel_linux.c
	drivers/media/video/samsung/mali/platform/mali_platform.h
	drivers/media/video/samsung/mali/platform/pegasus-m400/mali_platform.c
	drivers/media/video/samsung/mali/platform/pegasus-m400/mali_platform_dvfs.c

	modified:   arch/arm/mach-exynos/clock-exynos4212.c
GPU OC 700MHz
	modified:   arch/arm/mach-exynos/cpufreq-4x12.c GPU OC
700MHz
	modified:   arch/arm/mach-exynos/tmu.c GPU OC 700MHz
	modified:   drivers/gpu/mali400/r3p2/mali/Kbuild GPU
OC 700MHz
	modified:   drivers/gpu/mali400/r3p2/mali/Kconfig GPU
OC 700MHz
	modified:
drivers/gpu/mali400/r3p2/mali/common/mali_kernel_core.c GPU OC
700MHz
	modified:
drivers/gpu/mali400/r3p2/mali/platform/pegasus-m400/exynos4_pmm.c
GPU OC 700MHz
	modified:
drivers/gpu/mali400/r3p2/mali/platform/pegasus-m400/exynos4_pmm.h
GPU OC 700MHz
	new file:
drivers/media/video/samsung/mali/linux/mali_kernel_linux.c GPU
OC 700MHz
	new file:
drivers/media/video/samsung/mali/platform/mali_platform.h GPU
OC 700MHz
	new file:
drivers/media/video/samsung/mali/platform/pegasus-m400/mali_platform.c
GPU OC 700MHz
	new file:
drivers/media/video/samsung/mali/platform/pegasus-m400/mali_platform_dvfs.c
GPU OC 700MHz
defconfig: added 'CONFIG_CPU_OVERCLOCK' to test if that sets OC