ASoC: imx-card: use snd_pcm_format_t type for asrc_format

Fix sparse warning:
sound/soc/fsl/imx-card.c:653:59: sparse: warning: incorrect type in assignment (different base types)
sound/soc/fsl/imx-card.c:653:59: sparse:    expected unsigned int [usertype] asrc_format
sound/soc/fsl/imx-card.c:653:59: sparse:    got restricted snd_pcm_format_t [usertype]
sound/soc/fsl/imx-card.c:655:59: sparse: warning: incorrect type in assignment (different base types)
sound/soc/fsl/imx-card.c:655:59: sparse:    expected unsigned int [usertype] asrc_format
sound/soc/fsl/imx-card.c:655:59: sparse:    got restricted snd_pcm_format_t [usertype]

Fixes: aa736700 ("ASoC: imx-card: Add imx-card machine driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1658399393-28777-6-git-send-email-shengjiu.wang@nxp.com


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