ALSA: powermac - Add missing KERN_* prefix to printk

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/ppc/powermac.c b/sound/ppc/powermac.c
index c936225..e9b02d9 100644
--- a/sound/ppc/powermac.c
+++ b/sound/ppc/powermac.c
@@ -110,7 +110,7 @@
 			goto __error;
 		break;
 	default:
-		snd_printk("unsupported hardware %d\n", chip->model);
+		snd_printk(KERN_ERR "unsupported hardware %d\n", chip->model);
 		err = -EINVAL;
 		goto __error;
 	}