ASoC: fsl_sai: Add support for i.MX8MN

The SAI module on i.MX8MN is almost same as i.MX8MP,
So reuse same soc data as i.MX8MP.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1653966123-28217-1-git-send-email-shengjiu.wang@nxp.com


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