As we want qemu symbols be exported to modules we should use the
gmodule-export-2.0 pkg-config instead of gmodule-2.0.

Cc: Marc-André Lureau <marcandre.lureau@gmail.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Message-id: 20180308085301.8875-2-kraxel@redhat.com