Add support files for manufacturing

These barebox scripts are used during manufacturing to upgrade the
uloader and barebox and to flash the kernel and rootfs.

create_image.sh can be used to assemble the uloader and barebox binaries
into a single binary that can be provided to the NOR programming house.

Change-Id: Ie7445c7fe757587353c52e655879f9fa78eadd32
5 files changed