Use qrc to deploy qml files in declarative-camera examples

Make the declarative-camera example working in shadow builds by including
the Qt Quick assets via a .qrc file.

Change-Id: Iea56e7d69558503abdf15a600a6ce21ea90ee99a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

examples/multimediawidgets/declarative-camera/qmlcamera.cpp

@@ -50,8 +50,7 @@ int main(int argc, char* argv[])
     // Qt.quit() called in embedded .qml by default only emits
     // quit() signal, so do this (optionally use Qt.exit()).
     QObject::connect(view.engine(), SIGNAL(quit()), qApp, SLOT(quit()));
-    view.setSource(QUrl::fromLocalFile(QCoreApplication::applicationDirPath() +
-                                       QLatin1String("/declarative-camera.qml")));
+    view.setSource(QUrl("qrc:///declarative-camera.qml"));
     view.resize(800, 480);
     view.show();
     return app.exec();