Change A2dpSinkService package from a2dp -> a2dpsink.

Change go/ag/901764/ changed the package of A2dpSinkService but the JNI
did not do the appropriate change.

Bug: 27744764
Bug: 28025011
Change-Id: I9a6cc0e695bef152c1bdf461a5f92468db5172ab
1 file changed