rockchip: rk3288: enable rockusb support on rk3288 based device

this patch enable rockusb support on rk3288 based device.

Signed-off-by: Eddie Cai <eddie.cai.linux@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/firefly-rk3288_defconfig b/configs/firefly-rk3288_defconfig
index bd7e1a0..e9eb20c 100644
--- a/configs/firefly-rk3288_defconfig
+++ b/configs/firefly-rk3288_defconfig
@@ -21,6 +21,7 @@
 CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_USB=y
+CONFIG_CMD_ROCKUSB=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_TIME=y
@@ -80,6 +81,7 @@
 CONFIG_USB_HOST_ETHER=y
 CONFIG_USB_ETHER_ASIX=y
 CONFIG_USB_ETHER_SMSC95XX=y
+CONFIG_USB_FUNCTION_ROCKUSB=y
 CONFIG_DM_VIDEO=y
 CONFIG_DISPLAY=y
 CONFIG_VIDEO_ROCKCHIP=y
@@ -88,3 +90,8 @@
 CONFIG_USE_TINY_PRINTF=y
 CONFIG_CMD_DHRYSTONE=y
 CONFIG_ERRNO_STR=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+CONFIG_USB_GADGET_VBUS_DRAW=0
+CONFIG_G_DNL_MANUFACTURER="Rockchip"
+CONFIG_G_DNL_VENDOR_NUM=0x2207
+CONFIG_G_DNL_PRODUCT_NUM=0x320a