ASoC: dt-bindings: realtek,rt5640: Various fixes

Merge series from Jon Hunter <jonathanh@nvidia.com>:

This series includes fixes for the realtek,rt5640 dt-binding to address
a few warnings that are observed when running the CHECK_DTBS=y for some
DTBs that use this codec.

Documentation/devicetree/bindings/sound/realtek,rt5640.yaml

@@ -44,6 +44,14 @@ properties:
       - realtek,rt5640
       - realtek,rt5639
 
+  clocks:
+    items:
+      - description: phandle and clock specifier for codec MCLK.
+
+  clock-names:
+    items:
+      - const: mclk
+
   reg:
     maxItems: 1
 
@@ -104,7 +112,7 @@ properties:
       - 4 # Use GPIO2 for jack-detect
       - 5 # Use GPIO3 for jack-detect
       - 6 # Use GPIO4 for jack-detect
-      - 7 # HDA?
+      - 7 # Use HDA header for jack-detect
 
   realtek,jack-detect-not-inverted:
     description:
@@ -129,7 +137,8 @@ properties:
       - 3 # Scale current by 1.5
 
   port:
-    $ref: /schemas/graph.yaml#/properties/port
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
 
 required:
   - compatible