mesa3d: pull out from x11

mesa3d does not depend on x11, it can be used by wayland or other apps

Signed-off-by: Bernd Kuhls <berndkuhls@hotmail.com>
Signed-off-by: Spenser Gilliland <spenser@gillilanding.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>