ASoC: soc-pcm: Remove unused 'debugfs_dpcm_state' entry

'debugfs_dpcm_state' member from structure snd_soc_pcm_runtime
is never used at all, so it is safe to remove it.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

include/sound/soc.h

@@ -1240,7 +1240,6 @@ struct snd_soc_pcm_runtime {
 	struct delayed_work delayed_work;
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_dpcm_root;
-	struct dentry *debugfs_dpcm_state;
 #endif
 
 	unsigned int num; /* 0-based and monotonic increasing */

sound/soc/soc-pcm.c

@@ -3010,8 +3010,7 @@ void soc_dpcm_debugfs_add(struct snd_soc_pcm_runtime *rtd)
 		return;
 	}
 
-	rtd->debugfs_dpcm_state = debugfs_create_file("state", 0444,
-						rtd->debugfs_dpcm_root,
-						rtd, &dpcm_state_fops);
+	debugfs_create_file("state", 0444, rtd->debugfs_dpcm_root,
+			    rtd, &dpcm_state_fops);
 }
 #endif