Set/clear developer mode flag in VbInit output

This would allow caller of VbInit know if vboot is on developer mode.

Signed-off-by: Che-Liang Chiou <clchiou@chromium.org>

BUG=chrome-os-partner:10947
TEST=Snow U-Boot successfully read the correct value of the flag

Change-Id: If1d88975892045467f5ab9d00b00ed53765b83f1
Reviewed-on: https://gerrit.chromium.org/gerrit/26557
Reviewed-by: Tom Wai-Hong Tam <waihong@chromium.org>
Commit-Ready: Che-Liang Chiou <clchiou@chromium.org>
Tested-by: Che-Liang Chiou <clchiou@chromium.org>
2 files changed