ASoC: omap-dmic: Use core to set the msbits constraint

Core can set the msbits constraint in behalf of the dai.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/omap/omap-dmic.c b/sound/soc/omap/omap-dmic.c
index 0855c1c..4dcb5a7 100644
--- a/sound/soc/omap/omap-dmic.c
+++ b/sound/soc/omap/omap-dmic.c
@@ -113,12 +113,10 @@
 
 	mutex_lock(&dmic->mutex);
 
-	if (!dai->active) {
-		snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
+	if (!dai->active)
 		dmic->active = 1;
-	} else {
+	else
 		ret = -EBUSY;
-	}
 
 	mutex_unlock(&dmic->mutex);
 
@@ -445,6 +443,7 @@
 		.channels_max = 6,
 		.rates = SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000,
 		.formats = SNDRV_PCM_FMTBIT_S32_LE,
+		.sig_bits = 24,
 	},
 	.ops = &omap_dmic_dai_ops,
 };