usb: aspeed-vhub: fix ep0 OUT ack received wrong length issue

If multiple devices in vhub are enumerated simultaneously, ep0 OUT
ack might received wrong data length. Using expected data length
instead.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Neal Liu <neal_liu@aspeedtech.com>
Link: https://lore.kernel.org/r/20211208100545.1441397-4-neal_liu@aspeedtech.com


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