The difference to the virtually identical ARB_robustness (which is already
enabled unconditionally) is miniscule and handled elsewhere, but this cap
seems like the right thing to require for this extension.
v2: drop the device reset cap requirement (Ilia)
Reviewed-by: Marek Olšák <marek.olsak@amd.com> (v1)
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>