ASoC: SOF: imx8m: Add DAI driver entry for MICFIL PDM

This will allow creating of PDM DAI links.
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20231109135900.88310-2-daniel.baluta@oss.nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/imx/imx8m.c

@@ -313,6 +313,13 @@ static struct snd_soc_dai_driver imx8m_dai[] = {
 		.channels_max = 32,
 	},
 },
+{
+	.name = "micfil",
+	.capture = {
+		.channels_min = 1,
+		.channels_max = 8,
+	},
+},
 };
 
 static int imx8m_dsp_set_power_state(struct snd_sof_dev *sdev,