ARM: dts: sun8i: a23/a33: Remove SoC node unit-name to avoid warnings

Our main node for all the in-SoC controllers used to have a unit name. The
unit-name, in addition to being actually false, would not match any reg
property, which generates a warning.

Remove it in order to remove those warnings.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>

arch/arm/boot/dts/sun8i-a23-a33.dtsi

@@ -118,7 +118,7 @@ ext_osc32k: ext_osc32k_clk {
 		};
 	};
 
-	soc@1c00000 {
+	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;

arch/arm/boot/dts/sun8i-a23.dtsi

@@ -45,7 +45,7 @@
 #include "sun8i-a23-a33.dtsi"
 
 / {
-	soc@1c00000 {
+	soc {
 		codec: codec@1c22c00 {
 			#sound-dai-cells = <0>;
 			compatible = "allwinner,sun8i-a23-codec";

arch/arm/boot/dts/sun8i-a33.dtsi

@@ -223,7 +223,7 @@ link_codec: simple-audio-card,codec {
 		};
 	};
 
-	soc@1c00000 {
+	soc {
 		tcon0: lcd-controller@1c0c000 {
 			compatible = "allwinner,sun8i-a33-tcon";
 			reg = <0x01c0c000 0x1000>;