libpayload: add UDC driver for Designware controller

Found in rockchips rk3288 as used in google/veyron.

BUG=None
TEST=None
BRANCH=None

Change-Id: I2f2c36c5bea3986a8a37f84c75608b838a8782ae
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 59a0bcd97e8d0f5ce5ac1301910e11b01e2d24b1
Original-Change-Id: Ic89ed54c48d6f9ce125a93caf96471abc6e8cd9d
Original-Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/272108
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Commit-Queue: Lin Huang <hl@rock-chips.com>
Original-Tested-by: Lin Huang <hl@rock-chips.com>
Reviewed-on: http://review.coreboot.org/10689
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/payloads/libpayload/drivers/Makefile.inc b/payloads/libpayload/drivers/Makefile.inc
index 57a82ac..25ff4fe 100644
--- a/payloads/libpayload/drivers/Makefile.inc
+++ b/payloads/libpayload/drivers/Makefile.inc
@@ -108,6 +108,7 @@
 # USB device stack
 libc-$(CONFIG_LP_UDC) += udc/udc.c
 libc-$(CONFIG_LP_UDC_CI) += udc/chipidea.c
+libc-$(CONFIG_LP_UDC_DWC2) += udc/dwc2.c
 
 # used by both USB HID and keyboard
 libc-y += hid.c