usb: chipidea: drop unused field "device" from ci13xxx_ep
It was used as a shorthand for gadget's device in request mapping/unmapping code, but now it's not used any more. Signed-off-by: NAlexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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