QmlDesigner: fix compile for Qt 5

Change-Id: I34282a36db8af9c5550ee4c9080519ce0c096d8e
Reviewed-by: Marco Bubke <marco.bubke@digia.com>

src/plugins/qmldesigner/components/propertyeditor/propertyeditor.pri

@@ -39,6 +39,11 @@ HEADERS += propertyeditor.h \
     declarativewidgetview.h \
     gradientlineqmladaptor.h
     
-QT += declarative
+greaterThan(QT_MAJOR_VERSION, 4) {
+    QT += quick1
+} else {
+    QT += declarative
+}
+
 RESOURCES += propertyeditor.qrc
 FORMS += behaviordialog.ui