ARM: dts: pxa: add pxa25x cpu operating points

Add the relevant data taken from the PXA 25x Electrical, Mechanical, and
Thermal Specfication. This will be input data for cpufreq-dt driver.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

arch/arm/boot/dts/pxa25x.dtsi

@@ -89,4 +89,29 @@ timer@40a00000 {
 		clocks = <&clktimer>;
 		status = "okay";
 	};
+
+	pxa250_opp_table: opp_table0 {
+		compatible = "operating-points-v2";
+
+		opp@99532800 {
+			opp-hz = /bits/ 64 <99532800>;
+			opp-microvolt = <1000000 950000 1650000>;
+			clock-latency-ns = <20>;
+		};
+		opp@199065600 {
+			opp-hz = /bits/ 64 <199065600>;
+			opp-microvolt = <1000000 950000 1650000>;
+			clock-latency-ns = <20>;
+		};
+		opp@298598400 {
+			opp-hz = /bits/ 64 <298598400>;
+			opp-microvolt = <1100000 1045000 1650000>;
+			clock-latency-ns = <20>;
+		};
+		opp@398131200 {
+			opp-hz = /bits/ 64 <398131200>;
+			opp-microvolt = <1300000 1235000 1650000>;
+			clock-latency-ns = <20>;
+		};
+	};
 };