ASoC: rt5640: Correct the judgement of data length

The patch corrects the judgement of data length.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 4a7bd0a..f0717db 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -1622,16 +1622,16 @@
 	dev_dbg(dai->dev, "bclk_ms is %d and pre_div is %d for iis %d\n",
 				bclk_ms, pre_div, dai->id);
 
-	switch (params_format(params)) {
-	case SNDRV_PCM_FORMAT_S16_LE:
+	switch (params_width(params)) {
+	case 16:
 		break;
-	case SNDRV_PCM_FORMAT_S20_3LE:
+	case 20:
 		val_len |= RT5640_I2S_DL_20;
 		break;
-	case SNDRV_PCM_FORMAT_S24_LE:
+	case 24:
 		val_len |= RT5640_I2S_DL_24;
 		break;
-	case SNDRV_PCM_FORMAT_S8:
+	case 8:
 		val_len |= RT5640_I2S_DL_8;
 		break;
 	default: