AP_Arming: support Benewake CAN

libraries/AP_Arming/AP_Arming.cpp

@@ -1027,6 +1027,7 @@ bool AP_Arming::can_checks(bool report)
                 case AP_CANManager::Driver_Type_MPPT_PacketDigital:
                 case AP_CANManager::Driver_Type_None:
                 case AP_CANManager::Driver_Type_Scripting:
+                case AP_CANManager::Driver_Type_Benewake:
                     break;
             }
         }