devlink: fix condition for compat device info

We need the port to be both ethernet and have the rigth netdev,
not one or the other.

Fixes: ddb6e99e2db1 ("ethtool: add compat for devlink info")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed