radeonsi: ignore the vertex element count in si_shader_selector_key_vs

It's always at least num_inputs, so just use num_inputs.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12812>
1 file changed