Add USB ethernet adapter support

- Add the same set of supported USB ethernet adapters as we have in
Enterprise. Hopefully this provides decent coverage of common USB
adapters.

Change-Id: Ic56b95314ae86f5c6ad287d914da037e3a83d37c
diff --git a/debian/defconfig b/debian/defconfig
index 6588a7f..6f4692c 100644
--- a/debian/defconfig
+++ b/debian/defconfig
@@ -433,3 +433,24 @@
 CONFIG_ANDROID=y
 CONFIG_ION=y
 CONFIG_ION_CMA_HEAP=y
+
+CONFIG_USB_PEGASUS=m
+CONFIG_USB_RTL8150=m
+CONFIG_USB_RTL8152=m
+CONFIG_USB_USBNET=m
+CONFIG_USB_NET_AX8817X=m
+CONFIG_USB_NET_AX88179_178A=m
+CONFIG_USB_NET_CDCETHER=m
+CONFIG_USB_NET_CDC_NCM=m
+CONFIG_USB_NET_DM9601=m
+CONFIG_USB_NET_SR9800=m
+CONFIG_USB_NET_SMSC75XX=m
+CONFIG_USB_NET_SMSC95XX=m
+CONFIG_USB_NET_NET1080=m
+CONFIG_USB_NET_PLUSB=m
+CONFIG_USB_NET_MCS7830=m
+CONFIG_USB_NET_CDC_SUBSET_ENABLE=m
+CONFIG_USB_NET_CDC_SUBSET=m
+CONFIG_USB_BELKIN=y
+CONFIG_USB_ARMLINUX=y
+CONFIG_USB_NET_ZAURUS=m