spirv: Also copy over binding information for atomic counters

I missed this if statement so atomic counters weren't getting bindings
and, when you have more than one of them, that meant they were all
getting combined into one.

Fixes: 3584cb09bc15 "spirv: Give atomic counters their own variable mode"
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6060>
1 file changed