V4L/DVB (13289): em28xx-audio: Convert printks to em28xx_err

Convert printks to em28xx_err.
Signed-off-by: NFilipe Rosset <rosset.filipe@gmail.com>
Signed-off-by: NDouglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/em28xx/em28xx-audio.c

@@ -293,7 +293,7 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
 	dprintk("opening device and trying to acquire exclusive lock\n");
 
 	if (!dev) {
-		printk(KERN_ERR "BUG: em28xx can't find device struct."
+		em28xx_err("BUG: em28xx can't find device struct."
 				" Can't proceed with open\n");
 		return -ENODEV;
 	}
@@ -325,7 +325,7 @@ static int snd_em28xx_capture_open(struct snd_pcm_substream *substream)
 
 	return 0;
 err:
-	printk(KERN_ERR "Error while configuring em28xx mixer\n");
+	em28xx_err("Error while configuring em28xx mixer\n");
 	return ret;
 }