scripts: Fix to ensure that port connection count is always set

This patch ensures that the port connection count is set to zero in those
cases when the port is not connected.

src/python/m5/SimObject.py

@@ -993,9 +993,8 @@ class SimObject(object):
         port_names.sort()
         for port_name in port_names:
             port = self._port_refs.get(port_name, None)
-            if port != None:
-                setattr(cc_params, 'port_' + port_name + '_connection_count',
-                        len(port))
+            setattr(cc_params, 'port_' + port_name + '_connection_count',
+                    len(port) if port != None else 0)
         self._ccParams = cc_params
         return self._ccParams