ALSA: oxygen: Use standard printk helpers

Convert with dev_err() and co from snd_printk(), etc.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/oxygen/xonar_lib.c b/sound/pci/oxygen/xonar_lib.c
index 0ebe7f5..706b1a4 100644
--- a/sound/pci/oxygen/xonar_lib.c
+++ b/sound/pci/oxygen/xonar_lib.c
@@ -56,9 +56,9 @@
 	if (has_power != data->has_power) {
 		data->has_power = has_power;
 		if (has_power) {
-			snd_printk(KERN_NOTICE "power restored\n");
+			dev_notice(chip->card->dev, "power restored\n");
 		} else {
-			snd_printk(KERN_CRIT
+			dev_crit(chip->card->dev,
 				   "Hey! Don't unplug the power cable!\n");
 			/* TODO: stop PCMs */
 		}