dt-bindings: arm: mediatek: Support mt8183-audiosys variant

Update the mediatek,audsys binding to support the mt8183-audiosys
compatible, which uses a different audio controller
(mediatek,mt8183-audio.yaml) compared to the legacy mt2701-audio
controller.

Reviewed-by: AngeloGioacchino Del Regno <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Signed-off-by: Julien Massot <[e-mail]>
Signed-off-by: Rob Herring (Arm) <[e-mail]>

Documentation/devicetree/bindings/arm/mediatek/mediatek,audsys.yaml

···
               - mediatek,mt7622-audsys
               - mediatek,mt8167-audsys
               - mediatek,mt8173-audsys
+              - mediatek,mt8183-audiosys
               - mediatek,mt8183-audsys
               - mediatek,mt8186-audsys
               - mediatek,mt8192-audsys
···
     const: 1
 
   audio-controller:
-    $ref: /schemas/sound/mediatek,mt2701-audio.yaml#
     type: object
 
 required:
   - compatible
   - '#clock-cells'
+
+if:
+  properties:
+    compatible:
+      contains:
+        const: mediatek,mt8183-audiosys
+then:
+  properties:
+    audio-controller:
+      $ref: /schemas/sound/mediatek,mt8183-audio.yaml#
+else:
+  properties:
+    audio-controller:
+      $ref: /schemas/sound/mediatek,mt2701-audio.yaml#
 
 additionalProperties: false