A descriptor set is internally reserved for descriptor set dynamic
offset which might not be used by an applications which otherwise
requires an extra descriptor set. This driconf option allows making
that trade-off by dropping support for dynamic offsets in exchange
for an extra descriptor set which means 5 usable descriptor sets on
A6XX and 8 on A7XX.
Signed-off-by: Mark Collins <mark@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25534>