[sun4i] first porting from android kernel(3.0.8)
1. add arch mach-sun4i
2. early_printk support
3. add timer, intterupt driver
4. add sys config utils
5. add emac, nand, i2c master drivers
6. add a built-in rootfs
[sun4i] port lcd, g2d driver
[sun4i] add build scripts and default config
mmc: add mmc driver
rtc:add rtc driver
ae:add the ae drv