ALSA: emux - Add missing KERN_* prefix to printk

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/synth/emux/emux_synth.c b/sound/synth/emux/emux_synth.c
index 2cc6f6f..3e921b3 100644
--- a/sound/synth/emux/emux_synth.c
+++ b/sound/synth/emux/emux_synth.c
@@ -956,7 +956,8 @@
 	if (emu->voices[voice].state == SNDRV_EMUX_ST_OFF)
 		emu->voices[voice].state = SNDRV_EMUX_ST_LOCKED;
 	else
-		snd_printk("invalid voice for lock %d (state = %x)\n",
+		snd_printk(KERN_WARNING
+			   "invalid voice for lock %d (state = %x)\n",
 			   voice, emu->voices[voice].state);
 	spin_unlock_irqrestore(&emu->voice_lock, flags);
 }
@@ -973,7 +974,8 @@
 	if (emu->voices[voice].state == SNDRV_EMUX_ST_LOCKED)
 		emu->voices[voice].state = SNDRV_EMUX_ST_OFF;
 	else
-		snd_printk("invalid voice for unlock %d (state = %x)\n",
+		snd_printk(KERN_WARNING
+			   "invalid voice for unlock %d (state = %x)\n",
 			   voice, emu->voices[voice].state);
 	spin_unlock_irqrestore(&emu->voice_lock, flags);
 }