Add -L to query the generic packed-nvlist IOV_GET_STATUS interface.
Report PF enable state and configured and total VF counts. For each VF,
print its PCI address, newbus attachment, bound driver, and ppt state.
Retry size negotiation if the topology changes between ioctls and reject
malformed or incompatible status records.
Keep NIC-specific operational state in ifconfig -v; iovctl owns the
device-neutral PCI topology and applies to any SR-IOV device class.
Relnotes: yes
Kevin Bowling
25de742864