The coreboot plugin never actually gained the ability to write. As it stands a
coreboot system now adds *two* system-firmware devices (from both flashrom and
coreboot) which isn't ideal.
Just allow flashrom to enumerate quirked devices and add coreboot-specific
metadata as required. If we require some kind of cbfs parsing then we can do
that in FuFlashromDevice->prepare_firmware().
This also means we now include a flashrom subproject as no distro currently has
a flashrom new enough to build the plugin.
Signed-off-by: Richard Hughes <richard@hughsie.com>
Signed-off-by: Artur Raglis <artur.raglis@3mdeb.com>
Signed-off-by: Maciej Pijanowski <maciej.pijanowski@3mdeb.com>
