Update module version to 5.2.0

Change-Id: I21840bf20e1e5af71e1f1d359929ad472874956f
Reviewed-by: Laszlo Papp <lpapp@kde.org>
Reviewed-by: Sergey Belyashov <Sergey.Belyashov@gmail.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

.qmake.conf

 load(qt_build_config)
 
-MODULE_VERSION = 5.1.0
+MODULE_VERSION = 5.2.0