make_chroot: Handle board overlay tarball.
Adds --board_overlay_path for unpacking a given board-specific overlay
on top of the generic SDK one (--stage3_path).
BUG=brillo:918
TEST=make_chroot --stage3_path --board_overlay_path unpacks the latter
on top of the former.
Change-Id: I90d874b21419dc4fced630a5eb0a8b2c312c405c
Reviewed-on: https://chromium-review.googlesource.com/274073
Trybot-Ready: Gilad Arnold <garnold@chromium.org>
Tested-by: Gilad Arnold <garnold@chromium.org>
Reviewed-by: Bertrand Simonnet <bsimonnet@chromium.org>
Commit-Queue: Gilad Arnold <garnold@chromium.org>
1 file changed
