add support for cpufreq-cpu0 for rk3288

changs including:
- dts for cpu0, rk808,
- clock for arm_clk
- cpufreq_cpu0 platform device init
- add config

Change-Id: Ia12b0121c16f32b31cf00c3094d5d466dcd276e6
Merge branch '3.14_kernel' of https://github.com/rkchrome/kernel into 3.14_kernel

Conflicts:
	arch/arm/boot/dts/rk3288-evb-rk808.dts
	arch/arm/boot/dts/rk3288-veyron.dts

Both change the compitable data

Change-Id: I96b23ea856051871aa7380c35b5663aee27cd80f