i40e: Fix message for other card without FEC.

When variable "req_fec, fec, an" are empty,
dmesg shows log with "Requested FEC: , Negotiated FEC: , Autoneg:".
Add link dmesg log for cards without FEC.
Signed-off-by: Czeslaw Zagorski <czeslawx.zagorski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40e/i40e_main.c

@@ -6594,11 +6594,15 @@ void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
 			else
 				req_fec = "CL74 FC-FEC/BASE-R";
 		}
+		netdev_info(vsi->netdev,
+			    "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
+			    speed, req_fec, fec, an, fc);
+	} else {
+		netdev_info(vsi->netdev,
+			    "NIC Link is Up, %sbps Full Duplex, Flow Control: %s\n",
+			    speed, fc);
 	}
 
-	netdev_info(vsi->netdev,
-		    "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
-		    speed, req_fec, fec, an, fc);
 }
 
 /**