radv: advertise attachmentFragmentShadingRate on GFX10.3
Layered VRS attachments is for later. The CTS failures are similar to the existing ones, I will investigate soon. Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Part-of: <!10187>