usb: net: migrate USB Ethernet adapters to Kconfig

This migrates ASIX, ASIX88179, MCS7830, RTL8152 and SMSC95XX to Kconfig.
Update defconfigs.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/eth/Kconfig b/drivers/usb/eth/Kconfig
index ab0fb6c..496a6d1 100644
--- a/drivers/usb/eth/Kconfig
+++ b/drivers/usb/eth/Kconfig
@@ -6,6 +6,20 @@
 
 if USB_HOST_ETHER
 
+config USB_ETHER_ASIX
+	bool "ASIX AX8817X (USB 2.0) support"
+	depends on USB_HOST_ETHER
+	---help---
+	  Say Y here if you would like to support ASIX AX8817X based USB 2.0
+	  Ethernet Devices.
+
+config USB_ETHER_ASIX88179
+	bool "ASIX AX88179 (USB 3.0) support"
+	depends on USB_HOST_ETHER
+	---help---
+	  Say Y here if you would like to support ASIX AX88179 based USB 3.0
+	  Ethernet Devices.
+
 config USB_ETHER_LAN75XX
 	bool "Microchip LAN75XX support"
 	depends on USB_HOST_ETHER
@@ -24,4 +38,26 @@
 	  Supports 10Base-T/ 100Base-TX/1000Base-T.
 	  This driver supports the internal PHY.
 
+config USB_ETHER_MCS7830
+	bool "MOSCHIP MCS7830 (7730/7830/7832) suppport"
+	depends on USB_HOST_ETHER
+	---help---
+	  Say Y here if you would like to support MOSCHIP MCS7830 based
+	  (7730/7830/7832) USB 2.0 Ethernet Devices.
+
+config USB_ETHER_RTL8152
+	bool "Realtek RTL8152B/RTL8153 support"
+	depends on USB_HOST_ETHER
+	---help---
+	  Say Y here if you would like to support Realtek RTL8152B/RTL8153 base
+	  USB Ethernet Devices. This driver also supports compatible devices
+	  from Samsung, Lenovo, TP-LINK and Nvidia.
+
+config USB_ETHER_SMSC95XX
+	bool "SMSC LAN95x support"
+	depends on USB_HOST_ETHER
+	---help---
+	  Say Y here if you would like to support SMSC LAN95xx based USB 2.0
+	  Ethernet Devices.
+
 endif