BLE-MIDI: change binding for BluetoothMidiService

Add a remote call addBluetoothDevice() using AIDL.
This was needed because onBind() is only called once.

Bug: 23219556
Bug: 23760886
Change-Id: Id7554ca55d596352d11dbd6ae3e403138a29c864
Signed-off-by: Phil Burk <philburk@google.com>
(cherry picked from commit 7cd06c0b9e087a555d2c5dd4cab5b7eac8497526)
diff --git a/Android.mk b/Android.mk
index 932723b..7d29814 100644
--- a/Android.mk
+++ b/Android.mk
@@ -344,6 +344,7 @@
 	media/java/android/media/IRingtonePlayer.aidl \
 	media/java/android/media/IVolumeController.aidl \
 	media/java/android/media/audiopolicy/IAudioPolicyCallback.aidl \
+	media/java/android/media/midi/IBluetoothMidiService.aidl \
 	media/java/android/media/midi/IMidiDeviceListener.aidl \
 	media/java/android/media/midi/IMidiDeviceOpenCallback.aidl \
 	media/java/android/media/midi/IMidiDeviceServer.aidl \