ARM: dts: imx: rdu1: cosmetic changes to the audio nodes

This renames the audio device to "Front" in order to match the RDU2
naming, which makes it easier for a unified userspace to deal with
both boards.

Also rename the phandle for the headphone amplifier to more closely
resemble the RDU2 DTS.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx51-zii-rdu1.dts

@@ -242,7 +242,7 @@ port@4 {
 
 	sound {
 		compatible = "simple-audio-card";
-		simple-audio-card,name = "RDU1 audio";
+		simple-audio-card,name = "Front";
 		simple-audio-card,format = "i2s";
 		simple-audio-card,bitclock-master = <&sound_codec>;
 		simple-audio-card,frame-master = <&sound_codec>;
@@ -251,7 +251,7 @@ sound {
 		simple-audio-card,routing =
 			"Headphone Jack", "HPLEFT",
 			"Headphone Jack", "HPRIGHT";
-		simple-audio-card,aux-devs = <&tpa6130a2>;
+		simple-audio-card,aux-devs = <&hpa1>;
 
 		sound_cpu: simple-audio-card,cpu {
 			sound-dai = <&ssi2>;
@@ -479,7 +479,7 @@ eeprom@50 {
 		reg = <0x50>;
 	};
 
-	tpa6130a2: amp@60 {
+	hpa1: amp@60 {
 		compatible = "ti,tpa6130a2";
 		reg = <0x60>;
 		pinctrl-names = "default";