[POWERPC] Fix mpc52xx fdt to use correct device_type for sound devices

This corrects the documented interface for mpc52xx device trees.
Sound devices should be using 'sound' for the device_type field, not
the type of sound interface.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/boot/dts/lite5200.dts b/arch/powerpc/boot/dts/lite5200.dts
index 8bc0d25..a8efb59 100644
--- a/arch/powerpc/boot/dts/lite5200.dts
+++ b/arch/powerpc/boot/dts/lite5200.dts
@@ -238,7 +238,7 @@
 
 		// PSC3 in CODEC mode example
 		i2s@2400 {		// PSC3
-			device_type = "i2s";
+			device_type = "sound";
 			compatible = "mpc5200-psc-i2s\0mpc52xx-psc-i2s";
 			reg = <2400 100>;
 			interrupts = <2 3 0>;
@@ -265,7 +265,7 @@
 
 		// PSC6 in AC97 mode example
 		ac97@2c00 {		// PSC6
-			device_type = "ac97";
+			device_type = "sound";
 			compatible = "mpc5200-psc-ac97\0mpc52xx-psc-ac97";
 			reg = <2c00 100>;
 			interrupts = <2 4 0>;
diff --git a/arch/powerpc/boot/dts/lite5200b.dts b/arch/powerpc/boot/dts/lite5200b.dts
index 81cb764..1aabee4 100644
--- a/arch/powerpc/boot/dts/lite5200b.dts
+++ b/arch/powerpc/boot/dts/lite5200b.dts
@@ -243,7 +243,7 @@
 
 		// PSC3 in CODEC mode example
 		i2s@2400 {		// PSC3
-			device_type = "i2s";
+			device_type = "sound";
 			compatible = "mpc5200b-psc-i2s\0mpc52xx-psc-i2s";
 			reg = <2400 100>;
 			interrupts = <2 3 0>;
@@ -270,7 +270,7 @@
 
 		// PSC6 in AC97 mode example
 		ac97@2c00 {		// PSC6
-			device_type = "ac97";
+			device_type = "sound";
 			compatible = "mpc5200b-psc-ac97\0mpc52xx-psc-ac97";
 			reg = <2c00 100>;
 			interrupts = <2 4 0>;