ALSA: Fix missing KERN_* prefix to printk in sound/pci

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c
index 826e6de..6506201 100644
--- a/sound/pci/cs5535audio/cs5535audio.c
+++ b/sound/pci/cs5535audio/cs5535audio.c
@@ -312,7 +312,7 @@
 
 	if (request_irq(pci->irq, snd_cs5535audio_interrupt,
 			IRQF_SHARED, "CS5535 Audio", cs5535au)) {
-		snd_printk("unable to grab IRQ %d\n", pci->irq);
+		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
 		err = -EBUSY;
 		goto sndfail;
 	}