[FIX] marketing_campaign: call super() using kwargs

Without this patch, the new-api/old-api adatpter will invert the
context and count attributes (takes always the context as last positional
argument). This lead to having the count argument being the context,
always returning the count of elements.

addons/marketing_campaign/marketing_campaign.py

@@ -413,8 +413,8 @@ class marketing_campaign_activity(osv.osv):
             for activity in segment_obj.campaign_id.activity_ids:
                 act_ids.append(activity.id)
             return act_ids
-        return super(marketing_campaign_activity, self).search(cr, uid, args,
-                                           offset, limit, order, context, count)
+        return super(marketing_campaign_activity, self).search(
+            cr, uid, args, offset=offset, limit=limit, order=order, context=context, count=count)
 
     #dead code
     def _process_wi_report(self, cr, uid, activity, workitem, context=None):