ASoC: dt-bindings: loongson,ls-audio-card: Use common sound card

Reference the common sound card properties. This allows removing the
`model` property and directly using the common `audio-routing` property
later on.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Link: https://patch.msgid.link/fa72a429a9d076d381f7d514184f19d5a35ffa51.1782439646.git.zhoubinbin@loongson.cn
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/loongson,ls-audio-card.yaml

@@ -8,20 +8,20 @@ title: Loongson 7axxx/2kxxx ASoC audio sound card driver
 
 maintainers:
   - Yingkun Meng <mengyingkun@loongson.cn>
+  - Binbin Zhou <zhoubinbin@loongson.cn>
 
 description:
   The binding describes the sound card present in loongson
   7axxx/2kxxx platform. The sound card is an ASoC component
   which uses Loongson I2S controller to transfer the audio data.
 
+allOf:
+  - $ref: sound-card-common.yaml#
+
 properties:
   compatible:
     const: loongson,ls-audio-card
 
-  model:
-    $ref: /schemas/types.yaml#/definitions/string
-    description: User specified audio sound card name
-
   mclk-fs:
     $ref: simple-card.yaml#/definitions/mclk-fs
 
@@ -47,12 +47,11 @@ properties:
 
 required:
   - compatible
-  - model
   - mclk-fs
   - cpu
   - codec
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |