Device properties framework updates for 5.3-rc1

 - Add helpers to count items in a property array (Andy Shevchenko).

 - Extend "software nodes" support to be more convenient for
   representing device properties supplied by drivers (Heikki
   Krogerus).

 - Add device_find_child_by_name() helper to the driver core (Heikki
   Krogerus).

 - Extend device connection code to also look for references provided
   via fwnode pointers (Heikki Krogerus).

 - Start to register proper struct device objects for USB Type-C
   muxes and orientation switches (Heikki Krogerus).

 - Update the intel_cht_int33fe driver to describe devices in a more
   general way with the help of "software nodes" (Heikki Krogerus).
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