ASoC: dt-bindings: fsl-asoc-card: Add compatbile string for wm8904 codec

The wm8904 codec is used on an i.MX95 Toradex board.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1713165456-3494-3-git-send-email-shengjiu.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/fsl-asoc-card.yaml

@@ -77,6 +77,7 @@ properties:
               - fsl,imx-audio-tlv320aic31xx
               - fsl,imx-audio-tlv320aic32x4
               - fsl,imx-audio-wm8524
+              - fsl,imx-audio-wm8904
               - fsl,imx-audio-wm8960
               - fsl,imx-audio-wm8962
               - fsl,imx-audio-wm8958