clk: rockchip: add dt-binding header for rk3328

Add the dt-bindings header for the rk3328, that gets shared between
the clock controller and the clock references in the dts.
Add softreset ID for rk3328.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>