prcmu-qos: disable ARM_KHZ ignoring

Signed-off-by: Shilin Victor <chrono.monochrome@gmail.com>
LiveOPP: fix vdd calibration

Signed-off-by: Shilin Victor <chrono.monochrome@gmail.com>
LiveOPP: new recalibration algorithm

thanks @1N4148 for idea and original patch
ported to ab8500 and slightly modified

Signed-off-by: Shilin Victor <chrono.monochrome@gmail.com>