Show full path when hovering over labels in pixmap cache profiler

This helps if you have multiple pixmaps with equal names.

Change-Id: I39a16f55d16c5729483c037b8c125795105fae0a
Reviewed-by: Alessandro Portale <alessandro.portale@digia.com>

plugins/qmlprofilerextension/pixmapcachemodel.cpp

@@ -161,6 +161,7 @@ QVariantList PixmapCacheModel::labels() const
         for (int i=0; i < d->pixmaps.count(); i++) {
             // Loading
             QVariantMap element;
+            element.insert(QLatin1String("displayName"), d->pixmaps[i].url);
             element.insert(QLatin1String("description"),
                            QVariant(getFilenameOnly(d->pixmaps[i].url)));