Voltage Control: allow for lower minimums

this allows the low CPU frequencies to take advantage of UV control

Signed-off-by: faux123 <reioux@gmail.com>

Conflicts:

	arch/arm/mach-msm/board-m7-regulator.c

Conflicts:
	arch/arm/mach-msm/acpuclock-krait.c
	arch/arm/mach-msm/board-8064-regulator.c