ac/nir/ngg: update bit_sizes_int

This is used for RADV's bit size lowering.

fossil-db (navi21):
Totals from 4520 (5.69% of 79377) affected shaders:
(no stat changes)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29242>

src/amd/common/nir/ac_nir_lower_ngg.c

@@ -1281,6 +1281,8 @@ add_deferred_attribute_culling(nir_builder *b, nir_cf_list *original_extracted_c
             }
             /* primitive is culled if any plane's clipdist of all vertices are negative */
             accepted_by_clipdist = nir_ieq_imm(b, clipdist_neg_mask, 0);
+
+            b->shader->info.bit_sizes_int |= 8;
          } else {
             accepted_by_clipdist = nir_imm_true(b);
          }