radv: optimize creating signaled syncobj with amdgpu_cs_create_syncobj2()

This creates a syncobj and sets it as signaled with one ioctl
instead of two.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5921>
3 files changed