In case the udev property is not present, we might want to query
the driver for the SVG name.
This is useful for driver-test as there is no udev device attached to
it, and for hidpp20 as we have auto-detection. We should then be able
to implement this in hidpp20 also so that the name gets automatically
created.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>