The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform2/+/0788acb06ebd2f1cb0ba0726e7e5d7e0395b33a2

commit 0788acb06ebd2f1cb0ba0726e7e5d7e0395b33a2
Author: Gwendal Grignou <gwendal@chromium.org>
Date: Thu Jun 21 19:17:57 2018

chromeos-common-script: Fix install_hybrid_mbr

install_hybrid_mbr was not working as sfdisk was not in the path.
Using sudo adds /sbin before running the command.
Also, if the argument is a loop device, sudo is mandatory.

The problem was hidden as overlays were re-defining install_hybrid_mbr()
with proper sudo calls.

Newer version of sfdisk (2.32) would wipe other partition tables by
default when another tabe is modified. Add option -w never to prevent
wipe when adding PMBR.

BUG= chromium:853582 
TEST=Check beaglebone work with

Change-Id: I80b9bf8aa4ef80490ec0d70cda2b2782977f498b
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1104699
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[modify] https://crrev.com/0788acb06ebd2f1cb0ba0726e7e5d7e0395b33a2/chromeos-common-script/share/chromeos-common.sh

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/board-overlays/+/101c899bef1ef4492643a8604b1fb74b4150f6db

commit 101c899bef1ef4492643a8604b1fb74b4150f6db
Author: Gwendal Grignou <gwendal@chromium.org>
Date: Fri Jun 22 02:56:19 2018

Remove duplicate install_hybrid_mbr

install_hybrid_mbr is already defined in chromeos-common.sh.
It is run when "hybrid_mbr" is specified in disk_layout.json.

BUG= chromium:853582 
TEST=Trybot all 3 boards, check PMBR and GPT are correct.
CQ-DEPEND=CL:1104699

Change-Id: I563c9bb3796865e1cce6ffecf5b373f4a147864b
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1104701
Tested-by: Gwendal Grignou <gwendal@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

[modify] https://crrev.com/101c899bef1ef4492643a8604b1fb74b4150f6db/overlay-sama5d3/scripts/board_specific_setup.sh
[modify] https://crrev.com/101c899bef1ef4492643a8604b1fb74b4150f6db/overlay-beaglebone/scripts/board_specific_setup.sh
[add] https://crrev.com/101c899bef1ef4492643a8604b1fb74b4150f6db/overlay-raspberrypi/scripts/disk_layout.json
[modify] https://crrev.com/101c899bef1ef4492643a8604b1fb74b4150f6db/overlay-raspberrypi/scripts/board_specific_setup.sh

The following revision refers to this bug:
  https://chrome-internal.googlesource.com/chromeos/overlays/overlay-loonix-private/+/0a1e0b5178529805d22150d19827e3403d1df54c

commit 0a1e0b5178529805d22150d19827e3403d1df54c
Author: Gwendal Grignou <gwendal@chromium.org>
Date: Fri Jun 22 02:56:22 2018