A wayland compositor on i.MX6 needs to create the wl_display
before creating the EGL display. This wl_display then needs to be
exposed so that QWaylandCompositor can use it.
Change-Id: Id60f6dd2fbba05140ca0671da6f17dbc2ecce3a3
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
