MIPS: ralink: add CPU interrupt controller to of_irq_ids

Convert the ralink IRQ code to make use of the new MIPS IRQ controller OF
mappings.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: David Daney <david.daney@cavium.com>
Patchwork: http://patchwork.linux-mips.org/patch/4900/
diff --git a/arch/mips/ralink/dts/rt3050.dtsi b/arch/mips/ralink/dts/rt3050.dtsi
index fd49daa..069d066 100644
--- a/arch/mips/ralink/dts/rt3050.dtsi
+++ b/arch/mips/ralink/dts/rt3050.dtsi
@@ -13,6 +13,13 @@
 		bootargs = "console=ttyS0,57600 init=/init";
 	};
 
+	cpuintc: cpuintc@0 {
+		#address-cells = <0>;
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		compatible = "mti,cpu-interrupt-controller";
+	};
+
 	palmbus@10000000 {
 		compatible = "palmbus";
 		reg = <0x10000000 0x200000>;
@@ -37,6 +44,9 @@
 
 			interrupt-controller;
 			#interrupt-cells = <1>;
+
+			interrupt-parent = <&cpuintc>;
+			interrupts = <2>;
 		};
 
 		memc@300 {