Extend aquacomputer_d5next driver to expose hardware temperature sensors
of the Aquacomputer Farbwerk 360 RGB controller, which communicates through
a proprietary USB HID protocol.

Four temperature sensors are available. Additionally, serial number and
firmware version are exposed through debugfs.

This driver has been tested on x86_64.
Signed-off-by: Aleksa Savic <savicaleksa83@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>