ARM: tegra: Enable CPUFreq support for Tegra124 Chromebooks

Add the device-tree DFLL clock node and CPU regulator phandle for
Tegra124 Chromebooks to enable CPUFreq support on these boards.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra124-nyan.dtsi

@@ -159,7 +159,7 @@ regulators {
 				vin-ldo9-10-supply = <&vdd_5v0_sys>;
 				vin-ldo11-supply = <&vdd_3v3_run>;
 
-				sd0 {
+				vdd_cpu: sd0 {
 					regulator-name = "+VDD_CPU_AP";
 					regulator-min-microvolt = <700000>;
 					regulator-max-microvolt = <1350000>;
@@ -397,6 +397,13 @@ sdhci@0,700b0600 { /* eMMC on this bus */
 		non-removable;
 	};
 
+	/* CPU DFLL clock */
+	clock@0,70110000 {
+		status = "okay";
+		vdd-cpu-supply = <&vdd_cpu>;
+		nvidia,i2c-fs-rate = <400000>;
+	};
+
 	ahub@0,70300000 {
 		i2s@0,70301100 {
 			status = "okay";
@@ -487,6 +494,12 @@ clk32k_in: clock@0 {
 		};
 	};
 
+	cpus {
+		cpu@0 {
+			vdd-cpu-supply = <&vdd_cpu>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";