net/nfp: free port private data on close

net/nfp: free port private data on close

Free the private data of a port when the .dev_close() callback is
invoked. For NFP6000/4000 devices multiple ports may exist under a
single PF device. In this situation the PF resources will only be freed
when all the ports associated with the PF has been freed too.

PF hot plugging isn't explicitly supported for NFP6000/4000 devices but
all the private data of all the ports under the PF in question will be
freed upon device removal.

Signed-off-by: Heinrich Kuhn <heinrich.kuhn@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Louis Peens <louis.peens@netronome.com>