Fall back to the udev parent if the vendor is unknown
Fall back to the udev parent if the vendor is unknown

This lets us get the correct vendor for NVMe devices.

fwupd/fwupd,fwupd/fwupd,vathpela/fwupd,vathpela/fwupd,hughsie/fwupd,hughsie/fwupd,hughsie/fwupd,vathpela/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,vathpela/fwupd