msm: acpuclock-krait: Implement CPU voltage control

Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>

Conflicts:
	drivers/cpufreq/cpufreq.c
msm: board-flo: Decrease minimum SAW regulator voltage

Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>