mips: dts: ralink: mt7621: remove interrupt-parent from switch node

The interrupt-parent property is inherited from the ethernet node as it's a
parent node of the switch node. Therefore, remove the unnecessary
interrupt-parent property from the switch node.
Signed-off-by: NArınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: NSergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/mips/boot/dts/ralink/mt7621.dtsi

@@ -348,7 +348,6 @@
 				reset-names = "mcm";
 				interrupt-controller;
 				#interrupt-cells = <1>;
-				interrupt-parent = <&gic>;
 				interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
 
 				ports {