ARM: dts: uniphier: simplify support-card node structure

This device hierarchy is needlessly complex.

Remove the support-card node level, and move the ethernet and serial
nodes right under the system-bus node.

This also fixes the following warning from 'make ARCH=arm dtbs_check':

  support-card@1,1f00000: $nodename:0: 'support-card@1,1f00000' does not match '^(bus|soc|axi|ahb|apb)(@[0-9a-f]+)?$'
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/boot/dts/uniphier-support-card.dtsi

@@ -8,26 +8,19 @@
 &system_bus {
 	status = "okay";
 	ranges = <1 0x00000000 0x42000000 0x02000000>;
+	interrupt-parent = <&gpio>;
 
-	support_card: support-card@1,1f00000 {
-		compatible = "simple-bus";
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges = <0x00000000 1 0x01f00000 0x00100000>;
-		interrupt-parent = <&gpio>;
-
-		ethsc: ethernet@0 {
-			compatible = "smsc,lan9118", "smsc,lan9115";
-			reg = <0x00000000 0x1000>;
-			phy-mode = "mii";
-			reg-io-width = <4>;
-		};
+	ethsc: ethernet@1,1f00000 {
+		compatible = "smsc,lan9118", "smsc,lan9115";
+		reg = <1 0x01f00000 0x1000>;
+		phy-mode = "mii";
+		reg-io-width = <4>;
+	};
 
-		serialsc: serial@b0000 {
-			compatible = "ns16550a";
-			reg = <0x000b0000 0x20>;
-			clock-frequency = <12288000>;
-			reg-shift = <1>;
-		};
+	serialsc: serial@1,1fb0000 {
+		compatible = "ns16550a";
+		reg = <1 0x01fb0000 0x20>;
+		clock-frequency = <12288000>;
+		reg-shift = <1>;
 	};
 };