clover/nir/spirv: Use uniform rather than shader_in for kernel inputs

The semantics of inputs for CL are a closer match to the semantics of uniforms for graphics.
Rather than cross-stage data, it's data that every thread sees uniformly.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6497>
3 files changed