The spirv-to-c-array.py script assembles a SPIR-V module,
then disassembles it, capturing that text, then re-assembles
that text, providing it on stdin. But this last invocation of
spirv-as must use '-' to specify that the text input appears
on stdin.
Currently it always errors out, complaining that there must
be exactly one input file.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35691>
