fix NLP for COARSE applications, build FLP with SDK

In this commit, we provide a means for unbundled location providers
to attach an EXTRA_NO_GPS_LOCATION to the Locations that they report.

We also build FusedLocation against the SDK rather than the internal
tree.

Used in conjunction with I394ded497b8de40d1f85618bff282553cdf378cb
to fix NLP for applications with only ACCESS_COARSE_LOCATION
permission.

Bug: 7453355
Change-Id: Ie696f7abff9ef5237740ab87fe9f537a1c812c54