arm64: dts: qcom: msm8992: Add RPMCC node

This lets us use clocks provided by RPM.
Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Link: https://lore.kernel.org/r/20200625182118.131476-12-konradybcio@gmail.comSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/msm8992.dtsi

@@ -588,6 +588,11 @@ rpm {
 			rpm_requests: rpm-requests {
 				compatible = "qcom,rpm-msm8994";
 				qcom,smd-channels = "rpm_requests";
+
+				rpmcc: rpmcc {
+					compatible = "qcom,rpmcc-msm8992";
+					#clock-cells = <1>;
+				};
 			};
 		};
 	};