voltage_control: initial voltage control for 8960 krait
based on the voltage control patch for s4 pro socs by @faux123

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	arch/arm/mach-msm/Kconfig
	arch/arm/mach-msm/acpuclock-8960.c
Voltage Control: add sysfs interface
Signed-off-by: faux123 <reioux@gmail.com>
Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
Clean up Voltage control, ignore msm8960 errata cases for now allowing all cpus to follow VDD table