Update how flag read only status is passed to aapt2

Now in addition to name:ro we also support name:READ_ONLY and
name:READ_WRITE

Test: Automatic
Bug: atest 344979955
Flag: EXEMPT Aconfig not supported on host tools
Change-Id: I0b581ac250f36b209d5151d0caa0a5c3c2d311cc
2 files changed