fotg210-udc: Fix EP0 IN requests bigger than two packets

For a 134 Byte packet, it sends the first two 64 Byte packets just fine,
but then notice that less than a packet is remaining and call fotg210_done
without actually sending the rest.

Fixes: b84a8dee ("usb: gadget: add Faraday fotg210_udc driver")
Signed-off-by: Fabian Vogt <fabian@ritter-vogt.de>
Link: https://lore.kernel.org/r/20210324141115.9384-3-fabian@ritter-vogt.de


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>