Merge branch 'tools-ynl-gen-misc-changes'

Asbjørn Sloth Tønnesen says:

====================
tools: ynl-gen: misc changes

Misc changes to ahead of wireguard ynl conversion, as announced in v1.

v1: https://lore.kernel.org/20250901145034.525518-1-ast@fiberby.net
====================

Link: https://patch.msgid.link/20250902154640.759815-1-ast@fiberby.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>