spirv: Update headers and metadata from latest Khronos commit

This corresponds to c43a43c7cc3af55910b9bec2a71e3e8a622443cf
(" Register the Xenia emulator as a generator (#171)") in
https://github.com/KhronosGroup/SPIRV-Headers.

Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7150>
3 files changed