Fix Qbs build

Change-Id: Ia46cadd346561c2d52596290e3fbabcc2e746229
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/qmlprojectmanager/qmlprojectmanager.qbs

@@ -9,6 +9,7 @@ QtcPlugin {
 
     Depends { name: "Core" }
     Depends { name: "ProjectExplorer" }
+    Depends { name: "QmlDesignerBase" }
     Depends { name: "QtSupport" }
     Depends { name: "TextEditor" }