ASoC: dt-bindings: fsl-sai: Simplify the VFxxx dmas binding

Get rid of the vf610 sai special case, instead update the vfxxx.dtsi
DT to use the same DMA channel ordering as all the other devices. The
sai DMA channel ordering has not been aligned with other IP DMA channel
ordering in the vfxxx.dtsi anyway.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230105144145.165010-1-marex@denx.de
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/fsl,sai.yaml

@@ -76,10 +76,14 @@ properties:
         minItems: 4
 
   dmas:
-    maxItems: 2
+    items:
+      - description: DMA controller phandle and request line for RX
+      - description: DMA controller phandle and request line for TX
 
   dma-names:
-    maxItems: 2
+    items:
+      - const: rx
+      - const: tx
 
   interrupts:
     items:
@@ -142,31 +146,6 @@ properties:
 
 allOf:
   - $ref: dai-common.yaml#
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: fsl,vf610-sai
-    then:
-      properties:
-        dmas:
-          items:
-            - description: DMA controller phandle and request line for TX
-            - description: DMA controller phandle and request line for RX
-        dma-names:
-          items:
-            - const: tx
-            - const: rx
-    else:
-      properties:
-        dmas:
-          items:
-            - description: DMA controller phandle and request line for RX
-            - description: DMA controller phandle and request line for TX
-        dma-names:
-          items:
-            - const: rx
-            - const: tx
   - if:
       required:
         - fsl,sai-asynchronous
@@ -199,9 +178,8 @@ examples:
                  <&clks VF610_CLK_SAI2>,
                  <&clks 0>, <&clks 0>;
         clock-names = "bus", "mclk1", "mclk2", "mclk3";
-        dma-names = "tx", "rx";
-        dmas = <&edma0 0 21>,
-               <&edma0 0 20>;
+        dma-names = "rx", "tx";
+        dmas = <&edma0 0 20>, <&edma0 0 21>;
         big-endian;
         lsb-first;
     };