ASoC: fsl_rpmsg: add soc specific data structure

Each platform has different supported rates and
formats, so add soc specific data for each platform.
This soc specific data is attached with compatible string.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/1630044038-19036-1-git-send-email-shengjiu.wang@nxp.com


Signed-off-by: Mark Brown <broonie@kernel.org>