ARM: dts: imx28: Fix label name for L2 switch

The 'eth_switch' name has been misspelled in the imx28.dtsi file,
so this change fixes it.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 94dfbf5..bbe5215 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -1317,7 +1317,7 @@
 			status = "disabled";
 		};
 
-		etn_switch: switch@800f8000 {
+		eth_switch: switch@800f8000 {
 			reg = <0x800f8000 0x8000>;
 			status = "disabled";
 		};