nir: Replace the zs_output_pan intrinsic with combined_output_pan

Depth and stencil writes are combined with color writes, so we need
this intrinsic which has sources for color, RT, depth and stencil.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5065>

src/compiler/nir/nir_intrinsics.py

@@ -875,7 +875,7 @@ intrinsic("bindless_resource_ir3", [1], dest_comp=1, indices=[DESC_SET], flags=[
 
 # src[] = { value }
 store("raw_output_pan", 1, [])
-store("zs_output_pan", 1, [COMPONENT])
+store("combined_output_pan", 4, [BASE, COMPONENT])
 load("raw_output_pan", 0, [], [CAN_ELIMINATE, CAN_REORDER])
 
 # Loads the sampler paramaters <min_lod, max_lod, lod_bias>