QmlDesigner: fix binding is not working

Change-Id: Ic40eca09f281626428157dd94ed802c846b2f7e9
Task-number: QTCREATORBUG-15942
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@theqtcompany.com>

share/qtcreator/qml/qmlpuppet/qmlprivategate/qmlprivategate.pri

@@ -1,5 +1,29 @@
 INCLUDEPATH += $$PWD/
 
+# in case we are building the puppet inside qtcreator we don't have the qtcreator.pri where this function comes from
+defineTest(minQtVersion) {
+    maj = $$1
+    min = $$2
+    patch = $$3
+    isEqual(QT_MAJOR_VERSION, $$maj) {
+        isEqual(QT_MINOR_VERSION, $$min) {
+            isEqual(QT_PATCH_VERSION, $$patch) {
+                return(true)
+            }
+            greaterThan(QT_PATCH_VERSION, $$patch) {
+                return(true)
+            }
+        }
+        greaterThan(QT_MINOR_VERSION, $$min) {
+            return(true)
+        }
+    }
+    greaterThan(QT_MAJOR_VERSION, $$maj) {
+        return(true)
+    }
+    return(false)
+}
+
 minQtVersion(5, 6, 0) {
 HEADERS += \
     $$PWD/qmlprivategate.h