- this allow to build qt5 with OpenGL ES support for i.MX5 and i.MX6
- tested on i.MX51, i.MX53 and i.MX6Q
- X11 support is not yet tested so we don't change the core settings
  when x11 is in DISTRO_FEATURES

Change-Id: Ie9c6b25cafe20ba0a3dc8ab4c6e6cdac4eee3f0d
Signed-off-by: Eric Bénard <eric@eukrea.com>