drm/doc/rfc: No STAGING out of drivers/staging.

Also the uapi should be reviewed and scrutinized before xe
is accepted upstream and we shouldn't cause regression.

Link: https://lore.kernel.org/all/20230630100059.122881-1-thomas.hellstrom@linux.intel.com


Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230829163005.54067-1-rodrigo.vivi@intel.com