ASoC: dapm: Use dev_warn for debugfs warning message

Remove printk(KERN_WARNING) and use dev_warn() instead.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index a4d4aa1..dcd1160 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1667,7 +1667,7 @@
 	dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
 
 	if (!dapm->debugfs_dapm) {
-		printk(KERN_WARNING
+		dev_warn(dapm->dev,
 		       "Failed to create DAPM debugfs directory\n");
 		return;
 	}