iris: Upload kernel inputs with system values

Clover doesn't upload a cbuf0 but instead provides the kernel inputs as
part of the pipe_grid.  The most obvious thing to do is to upload them
along with system values.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6280>
4 files changed