What:		For USB devices	: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/report_descriptor
		For BT devices	: /sys/class/bluetooth/hci<addr>/<hid-bus>:<vendor-id>:<product-id>.<num>/report_descriptor
		Symlink		: /sys/class/hidraw/hidraw<num>/device/report_descriptor
Date:		Jan 2011
KernelVersion:	2.0.39
Contact:	Alan Ott <alan@signal11.us>
Description:	When read, this file returns the device's raw binary HID
		report descriptor.
		This file cannot be written.
Users:		HIDAPI library (http://www.signal11.us/oss/hidapi)
