arm64: dts: rockchip: add clocks to rk356x cru

The rk356x cru requires a 24m clock input to function. Add the clocks
properties to the cru to clear some dtbs_check warnings.
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20220511150117.113070-3-pgwipeout@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk356x.dtsi

@@ -397,6 +397,8 @@ pmucru: clock-controller@fdd00000 {
 	cru: clock-controller@fdd20000 {
 		compatible = "rockchip,rk3568-cru";
 		reg = <0x0 0xfdd20000 0x0 0x1000>;
+		clocks = <&xin24m>;
+		clock-names = "xin24m";
 		#clock-cells = <1>;
 		#reset-cells = <1>;
 		assigned-clocks = <&cru PLL_GPLL>, <&pmucru PLL_PPLL>;