ARM: dts: Add SMP support for Broadcom NSP

Add device tree changes required for providing SMP support
for Broadcom Northstar Plus SoC.

Signed-off-by: Kapil Hali <[e-mail]>
Signed-off-by: Florian Fainelli <[e-mail]>

arch/arm/boot/dts/bcm-nsp.dtsi

···
 	model = "Broadcom Northstar Plus SoC";
 	interrupt-parent = <&gic>;
 
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a9";
+			next-level-cache = <&L2>;
+			reg = <0x0>;
+		};
+
+		cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a9";
+			next-level-cache = <&L2>;
+			enable-method = "brcm,bcm-nsp-smp";
+			secondary-boot-reg = <0xffff042c>;
+			reg = <0x1>;
+		};
+	};
+
 	mpcore {
 		compatible = "simple-bus";
 		ranges = <0x00000000 0x19000000 0x00023000>;