ARM: shmobile: kzm9g-reference dts: Sort i2c0 children by unit address

While at it rename the ak4648 node to "codec" to describe the device's
function instead of its model, and move its device-specific property
after its generic properties.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/sh73a0-kzm9g-reference.dts

@@ -188,6 +188,13 @@ &extal2_clk {
 
 &i2c0 {
 	status = "okay";
+
+	ak4648: codec@12 {
+		compatible = "asahi-kasei,ak4648";
+		reg = <0x12>;
+		#sound-dai-cells = <0>;
+	};
+
 	as3711@40 {
 		compatible = "ams,as3711";
 		reg = <0x40>;
@@ -258,12 +265,6 @@ ldo8 {
 			};
 		};
 	};
-
-	ak4648: ak4648@12 {
-		#sound-dai-cells = <0>;
-		compatible = "asahi-kasei,ak4648";
-		reg = <0x12>;
-	};
 };
 
 &i2c3 {