ALSA: usb-audio: Use standard print API

Use pr_*() instead of open-coded printk() for code simplicity.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20240807133452.9424-46-tiwai@suse.de

sound/usb/midi.c

@@ -224,10 +224,10 @@ static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint *ep,
 #ifdef DUMP_PACKETS
 static void dump_urb(const char *type, const u8 *data, int length)
 {
-	snd_printk(KERN_DEBUG "%s packet: [", type);
+	pr_debug("%s packet: [", type);
 	for (; length > 0; ++data, --length)
-		printk(KERN_CONT " %02x", *data);
-	printk(KERN_CONT " ]\n");
+		pr_cont(" %02x", *data);
+	pr_cont(" ]\n");
 }
 #else
 #define dump_urb(type, data, length) /* nothing */