CSI: Merged from sun4i,only support OV5640
sun7i:mmc: init version (from sun6i)
sun7i:mmc: add multi-plat(sun6i/sun7i) support
sun7i: add nand driver
sun7i: add dvfs/dram/chip id driver
add arch_reset function for PMU driver, not impletment yet
sun6i: watchdog initial version