usb: net: Add support for Microchip LAN75xx and LAN78xx

Add support for Microchip LAN7500, LAN7800 and LAN7850,
USB to 10/100/1000 Ethernet Controllers.

Signed-off-by: Yuiko Oshino <yuiko.oshino@microchip.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/usb/eth/Kconfig b/drivers/usb/eth/Kconfig
new file mode 100644
index 0000000..14cfa26
--- /dev/null
+++ b/drivers/usb/eth/Kconfig
@@ -0,0 +1,17 @@
+comment "USB to Ethernet Controller Drivers"
+
+config USB_ETHER_LAN75XX
+	bool "Microchip LAN75XX support"
+	---help---
+	  Say Y here if you would like to support Microchip LAN75XX Hi-Speed
+	  USB 2.0 to 10/100/1000 Gigabit Ethernet controller.
+	  Supports 10Base-T/ 100Base-TX/1000Base-T.
+	  This driver supports the internal PHY.
+
+config USB_ETHER_LAN78XX
+	bool "Microchip LAN78XX support"
+	---help---
+	  Say Y here if you would like to support Microchip LAN78XX USB 3.1
+	  Gen 1 to 10/100/1000 Gigabit Ethernet controller.
+	  Supports 10Base-T/ 100Base-TX/1000Base-T.
+	  This driver supports the internal PHY.