pan/bi: Add BI_GENERIC property

I don't want to have 20 class-specific structures floating around. So
let's derive them all from a common generic ALU type.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4061>
2 files changed