Merge tag 'hix5hd2-clock-for-3.18-v2' of git://github.com/hisilicon/linux-hisi into clk-next

Hisilicon HiX5HD2 clock updates for 3.18-v2

- Add I2C clocks
- Add watchdog clocks
- Add sd clocks
- Add complex clock implementation to support sata, usb and ethernet