Convert libmedia_jni to Android.bp

See build/soong/README.md for more information.

Test: m -j checkbuild
Change-Id: I1817c75ee45537ca0d5fc40a035f94a3dfeccc11
diff --git a/media/java/Android.bp b/media/java/Android.bp
new file mode 100644
index 0000000..0810699
--- /dev/null
+++ b/media/java/Android.bp
@@ -0,0 +1,4 @@
+filegroup {
+    name: "IMidiDeviceServer.aidl",
+    srcs: ["android/media/midi/IMidiDeviceServer.aidl"],
+}