Add NOTICE file

Copied from LICENSE.

Bug: 6299628

Change-Id: I31a2602e386b9bc1287972273978192d2d5fbc4e
Signed-off-by: Wei Zhong <wzhong@google.com>
(cherry picked from commit 529d5e56073eafce66b11344a26b694f02c21127)
1 file changed