Isolate the BRW/ELK differences in a single place. The way is done now,
we are not reusing the isa_info between calls. For the tools here this
is probably fine, if its someday this gets in the way, we can add an
opaque pointer to store the right data.
This intentionally is not used in Iris, since there the driver need more
detailed view into BRW/ELK and we don't want to create an all
encompassing abstraction for that.
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33054>
