Fill bdf field of the host_info structure in ENA
The host info bdf field is the abbreviation for the bus, device,
function of the PCI on which the device is being attached to.
Now the driver is filling information about that using FreeBSD RID
Submitted by: Michal Krawczyk <firstname.lastname@example.org>
Obtained from: Semihalf
Sponsored by: Amazon, Inc.