Merge tag 'pull-qapi-2025-02-26-v2' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2025-02-26

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# gpg: Signature made Tue 04 Mar 2025 15:02:51 HKT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2025-02-26-v2' of https://repo.or.cz/qemu/armbru:
  qapi: pluggable backend code generators
  docs/qapidoc: remove example section support
  docs/qapidoc: support header-less freeform sections
  qapi: update pylintrc config
  qapi/char.json: minor doc rewording for `hub` device

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>