New governor "Nightmare". Modified KEY_HOMEPAGE in mach-u1.c for JB-Sammy.

Conflicts:
	arch/arm/mach-exynos/mach-u1.c
	drivers/cpufreq/Kconfig
	drivers/cpufreq/Makefile
	drivers/input/keyboard/gpio_keys.c
	include/linux/cpufreq.h