ASoC: dt-bindings: fsl_rpmsg: Add compatible string for i.MX952

Add compatible string "fsl,imx952-rpmsg-audio" for i.MX952 platform,
which is backward compatible with i.MX95. Set it to fall back to
"fsl,imx95-rpmsg-audio".

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20260202105622.39772-3-chancel.liu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Chancel Liu

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

@@ -34,6 +34,7 @@ properties:
       - items:
           - enum:
               - fsl,imx94-rpmsg-audio
+              - fsl,imx952-rpmsg-audio
           - const: fsl,imx95-rpmsg-audio
 
   clocks: