ARM: dts: exynos: add CPU topology to Exynos5250

Describe Exynos5250 CPU topology.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/exynos5250.dtsi

···
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+				core1 {
+					cpu = <&cpu1>;
+				};
+			};
+		};
+
 		cpu0: cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a15";