ramips: fix cpu interrupt controller dtc warnings

The cpu interrupt controller doesn't have a reg property, hence we
can't use a unit address in the node name.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ramips/dts/mt7620a.dtsi

@@ -17,7 +17,7 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/mt7620n.dtsi

@@ -17,7 +17,7 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/mt7628an.dtsi

@@ -21,7 +21,7 @@
 		serial0 = &uartlite;
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/rt2880.dtsi

@@ -21,7 +21,7 @@
 		serial0 = &uartlite;
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/rt3050.dtsi

@@ -22,7 +22,7 @@
 		serial0 = &uartlite;
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/rt3352.dtsi

@@ -17,7 +17,7 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/rt3883.dtsi

@@ -23,7 +23,7 @@
 		serial0 = &uartlite;
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;

target/linux/ramips/dts/rt5350.dtsi

@@ -17,7 +17,7 @@
 		bootargs = "console=ttyS0,57600";
 	};
 
-	cpuintc: cpuintc@0 {
+	cpuintc: cpuintc {
 		#address-cells = <0>;
 		#interrupt-cells = <1>;
 		interrupt-controller;