ASoC: samsung: Snow DT bindings update

The new DT bindings are introduced so sound on the HDMI interface
can also be supported. The exisiting CPU and CODEC DAI phandle
properties are marked as deprecated.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/snow.txt

@@ -5,8 +5,17 @@ Required properties:
 			"google,snow-audio-max98090" or
 			"google,snow-audio-max98091" or
 			"google,snow-audio-max98095"
-- samsung,i2s-controller: The phandle of the Samsung I2S controller
-- samsung,audio-codec: The phandle of the audio codec
+- samsung,i2s-controller (deprecated): The phandle of the Samsung I2S controller
+- samsung,audio-codec (deprecated): The phandle of the audio codec
+
+Required sub-nodes:
+
+ - 'cpu' subnode with a 'sound-dai' property containing the phandle of the I2S
+    controller
+ - 'codec' subnode with a 'sound-dai' property containing list of phandles
+    to the CODEC nodes, first entry must be the phandle of the MAX98090,
+    MAX98091 or MAX98095 CODEC (exact device type is indicated by the compatible
+    string) and the second entry must be the phandle of the HDMI IP block node
 
 Optional:
 - samsung,model: The name of the sound-card