[ALSA] Suppress debug message

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

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/control.c b/sound/core/control.c
index f4ea6bf..4e39a21 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1102,7 +1102,7 @@
 		}
 	}
 	up_read(&snd_ioctl_rwsem);
-	snd_printd("unknown ioctl = 0x%x\n", cmd);
+	snd_printdd("unknown ioctl = 0x%x\n", cmd);
 	return -ENOTTY;
 }