thunderbolt: Changes for v5.19 merge window

This includes following Thunderbolt/USB4 changes for the v5.19 merge
window:

  * Improvements for Thunderbolt 1 DisplayPort tunneling
  * Link USB4 ports to their USB Type-C connectors
  * Lane bonding support for host-to-host (XDomain) connections
  * Buffer allocation improvement for devices with no DisplayPort
    adapters
  * Few cleanups and minor fixes.

All these have been in linux-next with no reported issues except that
there is a minor merge conflict with the kunit-next tree because one of
the commits touches the driver KUnit tests.
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