update hooks: slip in public falco overlay

For people who have falco builds already, regen their board configs
so that they also include the public overlay.

BUG=chromium:312951
TEST=Run "build_packages --board=falco" on an existing chroot with
both public and private overlay.
CQ-DEPEND=CL:175051

Change-Id: I24c9fe24b741e70ba2c348dbbf99dd2ed2650778
Reviewed-on: https://chromium-review.googlesource.com/175052
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Dave Parker <dparker@chromium.org>
Commit-Queue: Bernie Thompson <bhthompson@chromium.org>
1 file changed