arm64: dts: sdm845: Add parent clock for rpmhcc

RPM clock controller has parent as xo, so specify that in DT node for
rpmhcc
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sdm845.dtsi

@@ -3110,6 +3110,8 @@ apps_rsc: rsc@179c0000 {
 			rpmhcc: clock-controller {
 				compatible = "qcom,sdm845-rpmh-clk";
 				#clock-cells = <1>;
+				clock-names = "xo";
+				clocks = <&xo_board>;
 			};
 
 			rpmhpd: power-controller {