usb: testusb: Fix for showing the connection speed
testusb' application which uses 'usbtest' driver reports 'unknown speed' from the function 'find_testdev'. The variable 'entry->speed' was not updated from the application. The IOCTL mentioned in the FIXME comment can only report whether the connection is low speed or not. Speed is read using the IOCTL USBDEVFS_GET_SPEED which reports the proper speed grade. The call is implemented in the function 'handle_testdev' where the file descriptor was availble locally. Sample output is given below where 'high speed' is printed as the connected speed. sudo ./testusb -a high speed /dev/bus/usb/001/011 0 /dev/bus/usb/001/011 test 0, 0.000015 secs /dev/bus/usb/001/011 test 1, 0.194208 secs /dev/bus/usb/001/011 test 2, 0.077289 secs /dev/bus/usb/001/011 test 3, 0.170604 secs /dev/bus/usb/001/011 test 4, 0.108335 secs /dev/bus/usb/001/011 test 5, 2.788076 secs /dev/bus/usb/001/011 test 6, 2.594610 secs /dev/bus/usb/001/011 test 7, 2.9...
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