cpufreq: add fantasy

 Author:    Jeffrey Clark <dude@zaplabs.com>
	modified:   arch/arm/configs/ask_defconfig
	modified:   drivers/cpufreq/Kconfig
	modified:   drivers/cpufreq/Makefile
	new file:   drivers/cpufreq/cpufreq_fantasy.c
	modified:   include/linux/cpufreq.h