ASoC: dt-bindings: nau8824: Add master clock handling

Use master clock "mclk" if provided through device tree.

Signed-off-by: Maxim Kochetkov <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/sound/nuvoton,nau8824.yaml

···
   '#sound-dai-cells':
     const: 0
 
+  clocks:
+    items:
+      - description: The phandle of the master clock to the CODEC
+
+  clock-names:
+    items:
+      - const: mclk
+
   interrupts:
     maxItems: 1