This update:
* Clarifies the information about the acceptable source trees for
updating the include/drm-uapi Mesa directory
* Includes information about the current drm tree location
* Expands the explanation of the process for generating the
drm-uapi files
* Expands the explanation of how what information to include
in the Mesa commit that updates the drm-uapi files.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29973>
58bf403e8b