ARM: dts: keystone: drop address and size cells from GIC node

This is likely a copy-and-paste error from the
ARM GIC documentation, that has already been fixed.

address-cells should have been set to 0, as with the size
cells. As having those properties set to 0 is the
same thing as not specifying them, drop them completely.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

arch/arm/boot/dts/keystone.dtsi

@@ -28,8 +28,6 @@ memory {
 	gic: interrupt-controller {
 		compatible = "arm,cortex-a15-gic";
 		#interrupt-cells = <3>;
-		#size-cells = <0>;
-		#address-cells = <1>;
 		interrupt-controller;
 		reg = <0x0 0x02561000 0x0 0x1000>,
 		      <0x0 0x02562000 0x0 0x2000>,