If we say that the version format should be the same for the `version_lowest`
and the `version_bootloader` then it does not always make sense to set it at
the same time.
Moving the `version_format` to a standalone first-class property also means it
can be typically be set in the custom device `_init()` function, which means we
don't need to worry about *changing* ther version format as set by the USB and
UDev superclass helpers.
The factory-shipped MinnowBoardMAX board has firmware that does not include
the ESRT table. Create a 'fake' UEFI device with the lowest possible version
so that it can be updated to any version firmware.
All the HwId GUIDs are used for the fake UEFI device, and so should be used in
the firmware metadata for releases that should recover the system.