libpayload: udc/dwc2: Ignore setup packet in check for queue empty
during shutdown

DWC2 UDC controller always requires an active packet to be present in
EP0-OUT to ensure proper operation of control plane. Thus, during
shutdown ignore EP0-OUT for queue empty check if only 1 packet is
present.

BUG=b:24676003
BRANCH=None
TEST=Compiles successfully. "fastboot reboot-bootloader" reboots
device without timeout in udc shutdown.

Change-Id: Iafe46c80f58c4cd57f8d58f060d805b603506bbd
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 4e7c27d849c0411aae58e60a24d8170a27ab8485
Original-Change-Id: Ifa493ce0e41964ee7ca8bb3a1f4bb8726fa11173
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/311257
Original-Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/12413
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
1 file changed