qtpaths: add missing GenericConfigLocation, exists since Qt 5.2.0

Change-Id: I4d4ef2e0f33896984f436df6c9a033dd89866665
Reviewed-by: Sune Vuorela <sune@vuorela.dk>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/qtpaths/qtpaths.cpp

@@ -88,6 +88,7 @@ static const struct StringEnum {
     { "GenericDataLocation", QStandardPaths::GenericDataLocation },
     { "RuntimeLocation", QStandardPaths::RuntimeLocation },
     { "ConfigLocation", QStandardPaths::ConfigLocation },
+    { "GenericConfigLocation", QStandardPaths::GenericConfigLocation },
     { "DownloadLocation", QStandardPaths::DownloadLocation }
 };