ASoC: dt-bindings: rockchip: i2s-tdm: Fix rockchip,i2s-[rt]x-route

make dt_binding_check:

    Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml: properties:rockchip,i2s-rx-route: {'required': ['maxItems']} is not allowed for {'$ref': '/schemas/types.yaml#/definitions/uint32-array', 'description': 'Defines the mapping of I2S RX sdis to I2S data bus lines. By default, they are mapped one-to-one. rockchip,i2s-rx-route = <3> would mean sdi3 is receiving from data0.', 'maxItems': 4, 'items': [{'enum': [0, 1, 2, 3]}]}
	    hint: "maxItems" is not needed with an "items" list
	    from schema $id: http://devicetree.org/meta-schemas/items.yaml#
    Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml: properties:rockchip,i2s-tx-route: {'required': ['maxItems']} is not allowed for {'$ref': '/schemas/types.yaml#/definitions/uint32-array', 'description': 'Defines the mapping of I2S TX sdos to I2S data bus lines. By default, they are mapped one-to-one. rockchip,i2s-tx-route = <3> would mean sdo3 is sending to data0.', 'maxItems': 4, 'items': [{'enum': [0, 1, 2, 3]}]}
	    hint: "maxItems" is not needed with an "items" list
	    from schema $id: http://devicetree.org/meta-schemas/items.yaml#

Drop the "-" from the enums to fix this.

Fixes: 510f1c13 ("ASoC: dt-bindings: rockchip: add i2s-tdm bindings")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/606809e10db02f92b1e7f90c491cc72dd8e16f79.1634132907.git.geert+renesas@glider.beSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/rockchip,i2s-tdm.yaml

@@ -112,7 +112,7 @@ properties:
       rockchip,i2s-rx-route = <3> would mean sdi3 is receiving from data0.
     maxItems: 4
     items:
-      - enum: [0, 1, 2, 3]
+      enum: [0, 1, 2, 3]
 
   rockchip,i2s-tx-route:
     $ref: /schemas/types.yaml#/definitions/uint32-array
@@ -122,7 +122,7 @@ properties:
       rockchip,i2s-tx-route = <3> would mean sdo3 is sending to data0.
     maxItems: 4
     items:
-      - enum: [0, 1, 2, 3]
+      enum: [0, 1, 2, 3]
 
   rockchip,io-multiplex:
     description: