panfrost: Simplify shaderless packing

Let's keep all the shader descriptor stuff together.

Note that the packing here can be constant folded entirely in any
reasonable compiler.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6440>
1 file changed