Host identification for embedded thunderbolt controllers
On embedded tbt, the udev device that represents the host switch does not have a DROM and thus does not have device_name, vendor_name (and the corresponding id versions of it). In that case we fall back to using the dmi id information since this is the host device.
TODO:
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Commit messages -
LENOVO->Lenovo
Fixes #163 (closed) and fixes #164 (closed)