st/mesa: setup hw atomic limits. (v1.1)

st/mesa: setup hw atomic limits. (v1.1)

HW atomics need to use caps to set some limits, and some
other limits may also need limiting.

This fixes things up to work for evergreen hw, it may need
more changes in the future if other hw wants to use this path.

v1.1: fix indent.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Tested-By: Gert Wollny <gw.fossdev@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>