Overclocking: cut off normal max OC @1.84 GHz and make 1.944 GHz as ultimate

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

Conflicts:
	arch/arm/mach-msm/acpuclock-8064.c
	arch/arm/mach-msm/acpuclock-krait.c
some fixes