compositor-drm: fall back to EGL visual_id 0 if no others work
compositor-drm: fall back to EGL visual_id 0 if no others work

commit e76f185 stopped using visuals with "native visual id" == 0

This broke some systems, so we now try 0 as a worst case fallback if
everything else has failed.

Signed-off-by: Derek Foreman <2f97e0f0bc172406aab8ccd42dab54c95bab8759@osg.samsung.com>
Reviewed-by: Bryce Harrington <bdb14cfc1ab8d24e13de84adc40b41ae60c13bd1@osg.samsung.com>

Fantu/compositor-spice,giucam/weston,krezovic/weston,sir-murray/weston,krezovic/weston,Fantu/compositor-spice,kwm81/weston,kwm81/weston,Gnurou/weston,giucam/weston,Fantu/compositor-spice,Gnurou/weston,sir-murray/weston