ASoC: codec: realtek: Make the node name generic

"The name of a node should be somewhat generic, reflecting the function
of the device and not its precise programming model."

Do as suggested in the bindings examples.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/rt274.txt

@@ -26,7 +26,7 @@ Pins on the device (for linking into audio routes) for RT274:
 
 Example:
 
-codec: rt274@1c {
+rt274: codec@1c {
 	compatible = "realtek,rt274";
 	reg = <0x1c>;
 	interrupts = <7 IRQ_TYPE_EDGE_FALLING>;

Documentation/devicetree/bindings/sound/rt5514.txt

@@ -32,7 +32,7 @@ Pins on the device (for linking into audio routes) for I2C:
 
 Example:
 
-codec: rt5514@57 {
+rt5514: codec@57 {
 	compatible = "realtek,rt5514";
 	reg = <0x57>;
 };

Documentation/devicetree/bindings/sound/rt5616.txt

@@ -26,7 +26,7 @@ Pins on the device (for linking into audio routes) for RT5616:
 
 Example:
 
-codec: rt5616@1b {
+rt5616: codec@1b {
 	compatible = "realtek,rt5616";
 	reg = <0x1b>;
 };

Documentation/devicetree/bindings/sound/rt5651.txt

@@ -50,7 +50,7 @@ Pins on the device (for linking into audio routes) for RT5651:
 
 Example:
 
-codec: rt5651@1a {
+rt5651: codec@1a {
 	compatible = "realtek,rt5651";
 	reg = <0x1a>;
 	realtek,dmic-en = "true";

Documentation/devicetree/bindings/sound/rt5663.txt

@@ -47,7 +47,7 @@ Pins on the device (for linking into audio routes) for RT5663:
 
 Example:
 
-codec: rt5663@12 {
+rt5663: codec@12 {
 	compatible = "realtek,rt5663";
 	reg = <0x12>;
 	interrupts = <7 IRQ_TYPE_EDGE_FALLING>;