CPU OVERCLOCKING: initial CPU Overclocking for Snapdragon 800 Socs

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

Conflicts:
	arch/arm/mach-msm/Kconfig
OVERCLOCK: add ultimate overclock to 2.8 GHz

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