Fix call bcg devices

Author: blavka

bcg/gateway.py

@@ -466,7 +466,7 @@ def main():
     subparsers['devices'].add_argument('-s', '--include-links', action='store_true', help='include entries that are symlinks to real devices')
 
     argp.add_argument('-c', '--config', help='path to configuration file (YAML format)')
-    argp.add_argument('-d', '--device', help='device', required='-c' not in sys.argv and '--config' not in sys.argv)
+    argp.add_argument('-d', '--device', help='device')
     argp.add_argument('-H', '--mqtt-host', help='MQTT host to connect to (default is localhost)')
     argp.add_argument('-P', '--mqtt-port', help='MQTT port to connect to (default is 1883)')
     argp.add_argument('--no-wait', help='no wait on connect or reconnect serial port', action='store_true')