[ALSA] Add missing KERN_* prefix

Modules: ALSA<-OSS emulation,USB generic driver,USB USX2Y

Added missing KERN_* prefix to printk.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
index 0281a36..8abe086 100644
--- a/sound/usb/usx2y/usX2Yhwdep.c
+++ b/sound/usb/usx2y/usX2Yhwdep.c
@@ -193,7 +193,7 @@
 
 	do {
 		if ((err = usX2Y_create_usbmidi(card)) < 0) {
-			snd_printk("usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
+			snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
 			break;
 		}
 		if ((err = usX2Y_audio_create(card)) < 0) 
@@ -224,7 +224,7 @@
 		}
 		err = usb_set_interface(dev, 0, 1);
 		if (err)
-			snd_printk("usb_set_interface error \n");
+			snd_printk(KERN_ERR "usb_set_interface error \n");
 		else
 			err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
 		kfree(buf);
@@ -235,17 +235,17 @@
 		msleep(250);				// give the device some time
 		err = usX2Y_AsyncSeq04_init(priv);
 		if (err) {
-			snd_printk("usX2Y_AsyncSeq04_init error \n");
+			snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
 			return err;
 		}
 		err = usX2Y_In04_init(priv);
 		if (err) {
-			snd_printk("usX2Y_In04_init error \n");
+			snd_printk(KERN_ERR "usX2Y_In04_init error \n");
 			return err;
 		}
 		err = usX2Y_create_alsa_devices(hw->card);
 		if (err) {
-			snd_printk("usX2Y_create_alsa_devices error %i \n", err);
+			snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
 			snd_card_free(hw->card);
 			return err;
 		}