cursor-data.h: Change SuSE licensed code from X11 to Expat

The license text for this file mentions SuSE specifically, however it is
otherwise identical to all the other MIT X11 licensed code in Wayland,
and so can be changed to the substantially identical MIT Expat license.

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Acked-by: Keith Packard <keithp@keithp.com>