root authored Dec 12, 2019 and Guillaume Tucker committed Dec 17, 2019

Replace the "url" command line option with "fw" to use a local
firmware file and let the user download the firmware independently.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Update flashrom and libfdt to the versions from Chromium OS R80, that
is to say flashrom v0.9.9 and libfdt v1.4.7.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add flash-kevin.sh to flash the firmware on a rk3399-gru-kevin.  This
will get a firmware from a given URL and save it locally, read the
firmware from the device into a backup file, erase the flash and write
the new firmware.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>

Add the binaries for flashrom and libfdt needed to flash some
Chromebok models such as the rk3399-gru-kevin using a Servo-Micro
board.  These were built within the Chrome OS chroot.

If we need to keep using flashrom and libfdt, we should consider
existing Debian packages and adding any Chrome OS specific patches if
needed rather than tracking binaries directly.

Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>