radv/gfx10: Use correct gs_out for tess point_mode.

Fixes: 204e4da9 "radv: Use correct gs_out with tessellation."
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
10 jobs for !1296 with navi-tess-fix in 10 minutes and 45 seconds (queued for 46 seconds)
merge request