radv/gfx10: do not declare streamout SGPRS

Streamout is completely different on GFX10.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

src/amd/vulkan/radv_nir_to_llvm.c

@@ -837,6 +837,9 @@ declare_streamout_sgprs(struct radv_shader_context *ctx, gl_shader_stage stage,
 {
 	int i;
 
+	if (ctx->ac.chip_class >= GFX10)
+		return;
+
 	/* Streamout SGPRs. */
 	if (ctx->shader_info->info.so.num_outputs) {
 		assert(stage == MESA_SHADER_VERTEX ||