ARM: dts: kirkwood: Fix interrupt controller node name

The current ones makes validation unhappy:

  kirkwood-lsxhl.dt.yaml: main-interrupt-ctrl@20200: $nodename:0:
    'main-interrupt-ctrl@20200' does not match
    '^interrupt-controller(@[0-9a-f,]+)*$'

Signed-off-by: Lubomir Rintel <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

Author: lkundrak

arch/arm/boot/dts/kirkwood.dtsi

@@ -228,7 +228,7 @@
 			reg = <0x20128 0x4>;
 		};
 
-		intc: main-interrupt-ctrl@20200 {
+		intc: interrupt-controller@20200 {
 			compatible = "marvell,orion-intc";
 			interrupt-controller;
 			#interrupt-cells = <1>;