Change auto undervolting to use min freq only and adjust oc voltages

Signed-off-by: flar2 <asegaert@gmail.com>

Conflicts:
	arch/arm/mach-msm/clock-krait-8974.c
Set up underclocking and overclocking

Signed-off-by: flar2 <asegaert@gmail.com>

Conflicts:
	arch/arm/boot/dts/msm8974pro.dtsi
	arch/arm/mach-msm/clock-krait-8974.c