ARM: dts: imx51 cpu node

This patch adds a cpus/cpu@0 node for imx51 with default operating
points for the cpufreq-cpu0 driver. There is currently no regulator
support, so the voltages are 0 here.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx51.dtsi

@@ -56,6 +56,24 @@ osc {
 		};
 	};
 
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a8";
+			reg = <0>;
+			clock-latency = <61036>; /* two CLK32 periods */
+			clocks = <&clks 24>;
+			clock-names = "cpu";
+			operating-points = <
+				/* kHz  uV (No regulator support) */
+				160000  0
+				800000  0
+			>;
+		};
+	};
+
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;