Add NOTICE file

Duplicated from COPYING.

Bug: 6299628

Change-Id: If37162b8c311200a1bdf6eff38be580e2b3511d8
Signed-off-by: Wei Zhong <wzhong@google.com>
(cherry picked from commit a2ca78ca7d69124d9b3f37aea0dd2920274bf0d5)
1 file changed