[NAN-AWARE] Rename NAN to Aware

Rename only (and any reformatting needed to pass lint) - no
functional changes!

(cherry-pick of commit 49f8c84e)
(cherry-pick of commit 93852c97c636beaf6f9db0ab3994cac59cc83bf4)

Bug: 32263750
Test: All unit tests and integration (sl4a) tests pass.
Change-Id: I00700206c90c9e6a1a0a2a79248dd571fe43ec26