Add an Android.bp (and the missing NOTICE).

Comments in the Android.bp explain the deleted/modified files and other
differences between this and the upstream makefile.

Also add the missing NOTICE as a symlink to LICENSE.

Bug: http://b/69117476
Test: builds, manually played with resulting binaries via adb
Change-Id: I30cd27ee6642471ff8f005d1e9076e8802ff0196
6 files changed