egl/x11_dri3: enable & require xfixes 2.0

Cc: 20.2 <mesa-stable>
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Acked-by: Michel Dänzer <mdaenzer@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6132>
2 files changed