net/szedata2: do not affect Ethernet interfaces

net/szedata2: do not affect Ethernet interfaces

NFB cards employ multiple Ethernet ports.
Until now, Ethernet port-related operations were performed on all of them
(since the whole card was represented as a single port).
With new NFB-200G2QL card, this is no longer viable.

Since there is no fixed mapping between the queues and Ethernet ports,
and since a single card can be represented as two ports in DPDK,
there is no way of telling which (if any) physical ports should be
associated with individual ports in DPDK.

This is also described in documentation in more detail.

Signed-off-by: Matej Vido <vido@cesnet.cz>
Signed-off-by: Jan Remes <remes@netcope.com>