ARM: dts: sunxi: Remove useless address and size cells

The NAND chips in our DTs have address and size cells, even though they
don't have any child nodes. Remove them.

Reviewed-by: Miquel Raynal <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>

arch/arm/boot/dts/sun5i-gr8-chip-pro.dts

···
 	status = "okay";
 
 	nand@0 {
-		#address-cells = <2>;
-		#size-cells = <2>;
 		reg = <0>;
 		allwinner,rb = <0>;
 		nand-ecc-mode = "hw";

arch/arm/boot/dts/sun8i-r16-nintendo-nes-classic.dts

···
 
 	/* 2Gb Macronix MX30LF2G18AC (3V) */
 	nand@0 {
-		#address-cells = <1>;
-		#size-cells = <1>;
 		reg = <0>;
 		allwinner,rb = <0>;
 		nand-ecc-mode = "hw";