msm_cpu_freq_limit: module for controlling MSM quadcore cpus along with fixes (thanks to @faux123)

this module will allow proper max frequency control across all msm cores

Signed-off-by: faux123 <reioux@gmail.com>

Conflicts:
	Makefile
	arch/arm/mach-msm/Kconfig
	arch/arm/mach-msm/Makefile
msm_cpu_freq_limit: fix missing declarations in header