fugu: Add wifi HAL to vintf

Bug: 36886769
Test: compiles (assemble_vintf checks this is formatted correctly and 
works with compatibility matrix)
Change-Id: I97037ea4a746068bb1fe68285320781197a65fd0
(cherry picked from commit 1c25212cd10e7a13be48a2b78e0439eb5b8023e3)
1 file changed