Add a USB device driver for the Synopsys DWC USB device controller.
The common USB protocol stack code still need to be de-duplicated with
the STM32 implementation.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=chrome-os-partner:33919
TEST=plug Cr50 to a Linux workstation and see USB descriptors using
"lsusb -v -d 18d1:5014"
Change-Id: I4a367241053de2c2d94aa06f82ea4bee51f9f89a
Reviewed-on: https://chromium-review.googlesource.com/231160
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
