add maze to OWNERS

since there's now bpf code in tethering portion of the codebase.

Test: N/A
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I679b7ba6d5fff49bad4fb2fe7d251875e4cb94b5

OWNERS

@@ -2,5 +2,6 @@ codewiz@google.com
 jchalard@google.com
 junyulai@google.com
 lorenzo@google.com
+maze@google.com
 reminv@google.com
 satk@google.com