config: rk3399: add usb related configs

This patch to enable configs for usb module
- xhci
- ehci
- usb storage
- usb net

Signed-off-by: MengDongyang <daniel.meng@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Squashed in patch to move to Kconfig:
  https://patchwork.ozlabs.org/patch/672543/
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/rk3399_common.h b/include/configs/rk3399_common.h
index e9626a5..b026122 100644
--- a/include/configs/rk3399_common.h
+++ b/include/configs/rk3399_common.h
@@ -83,4 +83,16 @@
 
 #endif
 
+/* enable usb config for usb ether */
+#define CONFIG_USB_HOST_ETHER
+
+#define CONFIG_USB_ETHER_ASIX
+#define CONFIG_USB_ETHER_ASIX88179
+#define CONFIG_USB_ETHER_MCS7830
+#define CONFIG_USB_ETHER_SMSC95XX
+#define CONFIG_USB_ETHER_RTL8152
+
+/* rockchip xhci host driver */
+#define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
+
 #endif