ASoC: samsung: Use params_width()

commit 8c5178fca4ce ("ALSA: Add params_width() helpers") introduces
a helper to get the sample width. Updating Samsung related sound
drivers to use this helper.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/samsung/smdk_wm8580.c b/sound/soc/samsung/smdk_wm8580.c
index 7a16b32..b1a519f 100644
--- a/sound/soc/samsung/smdk_wm8580.c
+++ b/sound/soc/samsung/smdk_wm8580.c
@@ -37,13 +37,11 @@
 	unsigned int pll_out;
 	int bfs, rfs, ret;
 
-	switch (params_format(params)) {
-	case SNDRV_PCM_FORMAT_U8:
-	case SNDRV_PCM_FORMAT_S8:
+	switch (params_width(params)) {
+	case 8:
 		bfs = 16;
 		break;
-	case SNDRV_PCM_FORMAT_U16_LE:
-	case SNDRV_PCM_FORMAT_S16_LE:
+	case 16:
 		bfs = 32;
 		break;
 	default: