Qnx: Prefer SimpleTargetRunner::setRunnable over RunControl::*

RunControl::setRunnable is meant to go in the long run, individual
RunWorkers are better suited to handle their needs (and only their
needs) than trusting a one-Runnable-fits-all-workers-in-RunControl
setups.

Change-Id: I6bdb32cc69581503dd252af83b75428c0de2f648
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/qnx/qnxanalyzesupport.cpp

@@ -65,7 +65,7 @@ private:
         r.commandLineArguments +=
                 QmlDebug::qmlDebugTcpArguments(QmlDebug::QmlProfilerServices, port);
 
-        runControl()->setRunnable(r);
+        setRunnable(r);
 
         SimpleTargetRunner::start();
     }