ixgbe: Fix to get FDMI HBA attributes information with X550

ixgbe: Fix to get FDMI HBA attributes information with X550

Orabug: 23177316

Check whether the FCOE support is enabled for the devices to get the
 FDMI HBA attributes information instead of checking each device id.
Also, add Model string information for X550.

Signed-off-by: Usha Ketineni <usha.k.ketineni@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit b262a9a772eae649159fd2480992713a2dd2b3d3)
Signed-off-by: Brian Maly <brian.maly@oracle.com>