USB: devio: fix issue with log flooding

USB: devio: fix issue with log flooding

usbfs allows user space to pass down an URB which sets URB_SHORT_NOT_OK
for output URBs. That causes usbcore to log messages without limit
for a nonsensical disallowed combination. The fix is to silently drop
the attribute in usbfs.
The problem is reported to exist since 3.14
https://www.virtualbox.org/ticket/13085

Signed-off-by: Oliver Neukum <[email protected]>
CC: [email protected]
Acked-by: Alan Stern <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>