microsoft/clc: Move inline samplers to the end of the variable list

microsoft/clc: Move inline samplers to the end of the variable list

Since inline samplers are uniforms, just like kernel args, and
nir_lower_vars_to_explicit_types will assign driver_location based
on order in the variable list, move the inline samplers to the end
of the list to prevent them from creating gaps in the kernel arg
offsets.

Fixes: ff05da7f ("microsoft: Add CLC frontend and kernel/compute support to DXIL converter")
Reviewed-By: Bill Kristiansen <billkris@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9138>