pan/bi: Use new disassembler

We still use the clause/register decoding, but we now use the
metaprogrammed instruction decoding for the bulk of the operation.

We add a meson rule to call out to the Python generator script during
the build process.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6749>
2 files changed