panfrost: Record architecture major version

This tends to be easier to work with than the raw GPU ID and needs some
special casing for Midgard vs Bifrost/Valhall.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7206>
2 files changed