ARM: dts: qcom: msm8974: Add RPMCC DT node

Add the RPM Clock Controller DT node for msm8974-based platforms, so that
drivers can use the clocks provided by the RPM processor.
Signed-off-by: NGeorgi Djakov <georgi.djakov@linaro.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NAndy Gross <andy.gross@linaro.org>

arch/arm/boot/dts/qcom-msm8974.dtsi

@@ -2,6 +2,7 @@
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/qcom,gcc-msm8974.h>
+#include <dt-bindings/clock/qcom,rpmcc.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/reset/qcom,gcc-msm8974.h>
 #include "skeleton.dtsi"
@@ -1035,6 +1036,11 @@
 				compatible = "qcom,rpm-msm8974";
 				qcom,smd-channels = "rpm_requests";
 
+				rpmcc: clock-controller {
+					compatible = "qcom,rpmcc-msm8974", "qcom,rpmcc";
+					#clock-cells = <1>;
+				};
+
 				pm8841-regulators {
 					compatible = "qcom,rpm-pm8841-regulators";