Don't auto backup for MusicFX app

Set allowBackup to false in AndroidManifest.xml
to prevent auto backup for MusicFX app.

- MusicFX stores package name for having audio effect function
  in preference. In case of user changes product, MusicFX should launch
  audio effect app in new device app. But auto backup prevent it.

- auto backup functionality for this app is already blocked by
  system filter. But each app should disable it if there is no
  good reason for auto backup not to rely on system filter.

Bug: 31351681

Change-Id: Ibe36541f62e6b27ce8e90218c5fe59c67e4059da
1 file changed
tree: 3eea62c8f2c4e2de09572ac998d854acf67e9806
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml