include/CL: Update OpenCL headers to latest

This latest update contains a new header that defines the dispatch table
structure in order to avoid OpenCL implementations having to define it
themselves.

Reviewed-by: Karol Herbst <kherbst@redhat.com>
Acked-by: Francisco Jerez <currojerez@riseup.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3137>
3 files changed