ASoC: dapm: Change mutex lock subclass in dapm

Address the compilation issue by changing the subclass
enum in dapm functions.

Change-Id: Icd31748b1beb7328819de7f8e4a32c128f60c43f
CRs-fixed: 656634
Signed-off-by: Gopikrishnaiah Anandan <agopik@codeaurora.org>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 56efb97..a618878 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -3101,7 +3101,7 @@
 
 	dev_dbg(rtd->dev, "rtd stream %d event %d\n", stream, event);
 
-	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+	mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_PCM);
 	if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		widget_stream_event(pdapm, rtd->cpu_dai->playback_aif, event);
 		widget_stream_event(cdapm, rtd->codec_dai->playback_aif, event);