Cleanup and add my own Userspace voltage control

Cleanup of old Undervolting patch and add my own UV support. Based on @Stratosk's implementation with a few touch-ups.

Signed-off-by: zeroblade1984 <zeroblade1984@gmail.com>

Changes to be committed:
	modified:   arch/arm/mach-msm/acpuclock-krait.c
	modified:   drivers/cpufreq/cpufreq.c