Camera hal DarwiNN pipelines are switching to use the on-device
compilation, which achieves by talking to the EdgeTPU service.
This change added the required selinux policies to allow accessing
the service, as well as allowing file descriptors to be shared
between them for passing the compilation info around.
Bug: 182423730
Bug: 182706078
Test: verified on Oriole running camera.
Change-Id: I5d3bc84fd54d4618f505f37d9773894261061d7f
