ASoC: dt-bindings: Minor whitespace cleanup in example

The DTS code coding style expects exactly one space around '='
character.

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

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

···
                     "ctx2_rx", "ctx2_tx",
                     "ctx3_rx", "ctx3_tx";
         firmware-name = "imx/easrc/easrc-imx8mn.bin";
-        fsl,asrc-rate  = <8000>;
+        fsl,asrc-rate = <8000>;
         fsl,asrc-format = <2>;
     };

Documentation/devicetree/bindings/sound/fsl,imx-asrc.yaml

···
                <&sdma 20 23 1>, <&sdma 21 23 1>, <&sdma 22 23 1>;
         dma-names = "rxa", "rxb", "rxc",
                     "txa", "txb", "txc";
-        fsl,asrc-rate  = <48000>;
+        fsl,asrc-rate = <48000>;
         fsl,asrc-width = <16>;
 
         port {