ARM: dts: dra74x: Add missing cooling device properties for CPUs

The cooling device properties, like "#cooling-cells" and
"dynamic-power-coefficient", should either be present for all the CPUs
of a cluster or none. If these are present only for a subset of CPUs of
a cluster then things will start falling apart as soon as the CPUs are
brought online in a different order. For example, this will happen
because the operating system looks for such properties in the CPU node
it is trying to bring up, so that it can register a cooling device.

Add such missing properties.

Fix other missing properties (clocks, supply, clock latency) as well to
make it all work.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dra74x.dtsi

@@ -18,6 +18,16 @@ cpu@1 {
 			compatible = "arm,cortex-a15";
 			reg = <1>;
 			operating-points-v2 = <&cpu0_opp_table>;
+
+			clocks = <&dpll_mpu_ck>;
+			clock-names = "cpu";
+
+			clock-latency = <300000>; /* From omap-cpufreq driver */
+
+			/* cooling options */
+			#cooling-cells = <2>; /* min followed by max */
+
+			vbb-supply = <&abb_mpu>;
 		};
 	};