tgsi: don't set tgsi_info::uses_bindless_images for constbufs and hw atomics

This might have decreased performance for radeonsi/tgsi, because most
most shaders claimed they used bindless.

Cc: 18.3 19.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
(cherry picked from commit b326a15e)