Merge branch 'tools-ynl-auto-gen-for-all-genetlink-families'

Jakub Kicinski says:

====================
tools: ynl: auto-gen for all genetlink families

The code gen has caught up with all features required in genetlink
families in Linux 6.8 already. We have also stopped committing auto-
-generated user space code to the tree. Instead of listing all the
families in the Makefile search the spec directory, and generate
code for everything that's not legacy netlink.
====================

Link: https://lore.kernel.org/r/20240202004926.447803-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>