ALSA: fireworks: Add MIDI interface

This commit adds a functionality to capture/playback MIDI messages.

When no AMDTP streams are running, this driver starts AMDTP stream for MIDI
stream at current sampling rate.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/firewire/fireworks/Makefile b/sound/firewire/fireworks/Makefile
index 52bd15e..a2cecc6 100644
--- a/sound/firewire/fireworks/Makefile
+++ b/sound/firewire/fireworks/Makefile
@@ -1,3 +1,4 @@
 snd-fireworks-objs := fireworks_transaction.o fireworks_command.o \
-		      fireworks_stream.o fireworks_proc.o fireworks.o
+		      fireworks_stream.o fireworks_proc.o fireworks_midi.o \
+		      fireworks.o
 obj-m += snd-fireworks.o