[Bringup] Enable darwinn EdgeTPU implementation of NNAPI on PRO.

The NNAPI is now fully functional and passes all the tests. This CL enables the Darwinn NNAPI
service by default on the master branch.

Adding an OWNERS file to edgetpu part of gs*01 to make review process
easier in the future.

Bug: 186425023

Test: run_nnapi_test. tflite to nnapi test.

Change-Id: I4caeb01f23526f4094799df968c96646d52e2131
2 files changed