clk: rockchip: add dt-binding header for rk3228

Add the dt-bindings header for the rk3228, that gets shared between
the clock controller and the clock references in the dts.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
1 file changed