[ALSA] Suppress debug message

Control Midlevel
Suppress 'unknown ioctl' debug message (replaced with snd_printdd).

Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/control.c

@@ -1102,7 +1102,7 @@ static long snd_ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg
 		}
 	}
 	up_read(&snd_ioctl_rwsem);
-	snd_printd("unknown ioctl = 0x%x\n", cmd);
+	snd_printdd("unknown ioctl = 0x%x\n", cmd);
 	return -ENOTTY;
 }