Added Wheatley governor

For more info, see http://rootzwiki.com/topic/14685-kernel07-jul-glados-v134-testing-v20-for-jb/page__st__90__p__405813#entry405813

Change-Id: Id31a308a002a7a909805a1839899a01359f60c6d

Conflicts:

	arch/arm/configs/aries_galaxysmtd_defconfig
	drivers/cpufreq/Kconfig
	drivers/cpufreq/Makefile
	include/linux/cpufreq.h