For a while we flirted with the idea of updating non-internal
libflashrom-derived devices but the impedance mismatch was just too
great.
We removed the extra unused subclasses of FuFlashromDevice, but never
removed the indirection we added for the writing.
Remove the unused code now that we agree on the longer term plan.
This change allows other device types to derive from common flashrom
code in the flashrom-device type.
Change-Id: Ic963fd586e0a73153c54889fce50055753a1bf5c
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().
