nir/divergence: add missing btd_shader_type_intel

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 6d9ae6ec1e ("intel: add a new intrinsic to get the shader stage from bindless shaders")
Reviewed-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19948>

src/compiler/nir/nir_divergence_analysis.c

@@ -202,6 +202,7 @@ visit_intrinsic(nir_shader *shader, nir_intrinsic_instr *instr)
    case nir_intrinsic_load_provoking_vtx_in_prim_amd:
    case nir_intrinsic_load_lds_ngg_scratch_base_amd:
    case nir_intrinsic_load_lds_ngg_gs_out_vertex_base_amd:
+   case nir_intrinsic_load_btd_shader_type_intel:
       is_divergent = false;
       break;