ASoC: dt-bindings: mediatek,mt8188-mt6359: Add mediatek,accdet

Add a mediatek,accdet phandle property to allow getting a reference to
the MT6359 ACCDET block, which is responsible for detecting jack
insertion/removal.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patch.msgid.link/20250306-mt8188-accdet-v3-1-7828e835ff4b@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: nfraprado

Documentation/devicetree/bindings/sound/mediatek,mt8188-mt6359.yaml

@@ -40,6 +40,14 @@ properties:
       hardware that provides additional audio functionalities if present.
       The AFE will link to ADSP when the phandle is provided.
 
+  mediatek,accdet:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      The phandle to the MT6359 accessory detection block, which detects audio
+      jack insertion and removal. This property should only be present if the
+      accdet block is actually wired to the audio jack pins and to be used for
+      jack detection.
+
 patternProperties:
   "^dai-link-[0-9]+$":
     type: object