MIPS: SEAD3: Correct Ethernet node name

make dtbs_check:

    eth@1f010000: $nodename:0: 'eth@1f010000' does not match '^ethernet(@.*)?$'
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/boot/dts/mti/sead3.dts

@@ -244,7 +244,7 @@ uart1: uart@1f000800 {
 		no-loopback-test;
 	};
 
-	eth@1f010000 {
+	ethernet@1f010000 {
 		compatible = "smsc,lan9115";
 		reg = <0x1f010000 0x10000>;
 		reg-io-width = <4>;