FCoE HBA speed is marked as 'unknown' while port_state is 'online'

Issue

• FCoE HBA speed is marked as unknown in the output of fcoeadm -i command.

# fcoeadm -i
    Description:      BCM57840 NetXtreme II Ethernet Multi Function
    Revision:         11
    Manufacturer:     Broadcom Limited
    Serial Number:    20677C1587E0

    Driver:           bnx2x 1.712.30-0
    Number of Ports:  1

        Symbolic Name:     bnx2fc (QLogic BCM57840) v2.11.8 over ens3f3.3967-fco
        OS Device Name:    host3
        Node Name:         0x100012343ee00023
        Port Name:         0x100012343ee00022
        Fabric Name:        0x10000034560a0ff1
        Speed:             unknown            
    max_npiv_vports     = "65535"
    maxframe_size       = "2048 bytes"
    node_name           = "0x100012343ee00023"
    npiv_vports_inuse   = "0"
    port_id             = "0x010658"
    port_name           = "0x100012343ee00022"
    port_state          = "Online"
    port_type           = "NPort (fabric via point-to-point)"
    speed               = "unknown"      
    vport_delete        =