Configure fw branches

For any branch that begins with firmware-, allow the firmware team to
set Owners-Override.

(See also crrev/i/7823527)

Change-Id: I1a49a8e702d31d037b67f91a9d189f265384dee9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/+/6020286
Reviewed-by: Josip Sokcevic <[email protected]>
2 files changed