ASoC: dt-bindings: renesas: rsnd: tidyup properties

1) resets/reset-names needs minItems
2) It can use ports, not only port
3) It is not using audio-graph properties

Without this patch, we will get warnings
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87wnrooe2z.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/renesas,rsnd.yaml

@@ -86,9 +86,11 @@ properties:
   power-domains: true
 
   resets:
+    minItems: 1
     maxItems: 11
 
   reset-names:
+    minItems: 1
     maxItems: 11
 
   clocks:
@@ -110,6 +112,13 @@ properties:
         - pattern: '^dvc\.[0-1]$'
         - pattern: '^clk_(a|b|c|i)$'
 
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port(@[0-9a-f]+)?:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+
   port:
     $ref: audio-graph-port.yaml#
     unevaluatedProperties: false
@@ -257,7 +266,6 @@ required:
   - "#sound-dai-cells"
 
 allOf:
-  - $ref: audio-graph.yaml#
   - if:
       properties:
         compatible: