LiveOPP: PLLDDR: make clock registers tweakable

Signed-off-by: Shilin Victor <chrono.monochrome@gmail.com>
LiveOPP: PLLDDR: some changes

disallow to change registers of ACLK, SIACLK, SVACLK, MCDECLK since currently used values are incorrect

Signed-off-by: Shilin Victor <chrono.monochrome@gmail.com>
mach-ux500: prcmu-qos-pm: ignore ab8500-usb APE requirement

remove one more STE leftover xD

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