ASoC: wm8580: Use WARN() instead of BUG_ON()

Use WARN() instead.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NMark Brown <broonie@linaro.org>

sound/soc/codecs/wm8580.c

@@ -736,7 +736,7 @@ static int wm8580_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 		break;
 
 	default:
-		BUG_ON("Unknown DAI driver ID\n");
+		WARN(1, "Unknown DAI driver ID\n");
 		return -EINVAL;
 	}