msm: clock-krait-8974: User voltage control for msm-cpufreq device

Conflicts:
	arch/arm/mach-msm/cpufreq.c

Conflicts:
	arch/arm/mach-msm/clock-krait-8974.c

Change-Id: I2b193c849e2898a9f84a09ae7479e9aa9e399d8f