add devices.py --PORT <#> to disable others

unit-tests/py/rspy/devices.py

@@ -698,7 +698,7 @@ def _get_usb_location( physical_port ):
 
     try:
         opts,args = getopt.getopt( sys.argv[1:], '',
-            longopts = [ 'help', 'recycle', 'all', 'none', 'list', 'port=', 'ports' ])
+            longopts = [ 'help', 'recycle', 'all', 'none', 'list', 'port=', 'PORT=', 'ports' ])
     except getopt.GetoptError as err:
         print( '-F-', err )   # something like "option -a not recognized"
         usage()
@@ -718,15 +718,15 @@ def get_phys_port(dev):
         for opt,arg in opts:
             if opt in ('--list'):
                 action = 'list'
-            elif opt in ('--port'):
+            elif opt in ('--port','--PORT'):
                 if not hub:
                     log.f( 'No hub available' )
                 all_ports = hub.all_ports()
                 str_ports = arg.split(',')
                 ports = [int(port) for port in str_ports if port.isnumeric() and int(port) in all_ports]
                 if len(ports) != len(str_ports):
                     log.f( 'Invalid ports', str_ports )
-                hub.enable_ports( ports, disable_other_ports=False )
+                hub.enable_ports( ports, disable_other_ports=(opt == '--PORT') )
                 action = 'none'
             elif opt in ('--ports'):
                 printer = get_phys_port