usb: chipidea: udc: zero-length packet is only needed for TX

The zero-length packet is the sendor tells the receiver that there
is no more data, so it is only needed at the TX side.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
This commit is contained in:
Peter Chen 2015-07-28 10:08:32 +08:00
commit a4da4f12b4