Fix qmake build of unittests

This basically continues / amends work done
with e1c88116b3.

Change-Id: Ia8b3a4694e7fea4c15e344839f87c11fbe8fbbf4
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/qbsprojectmanager/qbsbuildstep.cpp

@@ -136,7 +136,7 @@ private:
 // QbsBuildStep:
 // --------------------------------------------------------------------
 
-QbsBuildStep::QbsBuildStep(BuildStepList *bsl, Core::Id id) :
+QbsBuildStep::QbsBuildStep(BuildStepList *bsl, Utils::Id id) :
     BuildStep(bsl, id)
 {
     setDisplayName(tr("Qbs Build"));