[NAN-AWARE] Rename NAN to Aware

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

(cherry-pick of commit 49f8c84e)

Bug: 32263750
Test: All unit tests and integration (sl4a) tests pass.
Merged-In: I00700206c90c9e6a1a0a2a79248dd571fe43ec26
Change-Id: I6b4b146a470ccbe081fb2f18d75e261a843978e2