Draft: rfkill: query the hardware rfkill reason from udev
The kernel may add a reason for hardware rfkill, fetch it and parse it. Propagate the reason as a property.
This will be used later to for integration with iwlmei. I shared more details a while ago here:
https://www.mail-archive.com/networkmanager-list@gnome.org/msg28757.html
Edited by Emmanuel Grumbach