Add port_id field to VIO device metadata to identify the port of
VIO device.
Signed-off-by: NJagannathan Raman <jag.raman@oracle.com>
Reviewed-by: NLiam Merwick <liam.merwick@oracle.com>
Reviewed-by: NShannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>