Make gccso shader binary support optional

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
OpenGL ES 1.x support in i.MX6 is deprecated

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
Improve check_vivante_egl function

Now accepts multiple defines

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
Add Wayland support

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>