Revert "Don't put native_support libraries into a namespace" am: 4328f7f467 am: 1601218635

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/libs/native_bridge_support/+/11876934

Change-Id: I913e3a0c9b561fbac915f548fa31ec280ed63cc2