irqbalance: Add option for new 'debug' setting

Add option for 'debug' setting that was introduced in
41e5b979f5

Signed-off-by: Carsten Schuette <schuettecarsten@googlemail.com>

applications/luci-app-irqbalance/htdocs/luci-static/resources/view/irqbalance.js

@@ -111,6 +111,8 @@ return view.extend({
                 : true;
         }
 
+        o = s.option(form.Flag, 'debug', _('Show debug output'), _('Show debug output in system log.'));
+
         return m.render();
     }
 });