Add new driver 'rndis_wlan' for wireless RNDIS devices.

New driver for wireless RNDIS devices. So far only known chip that uses
wireless RNDIS is Broadcom 4320. Driver detects all RNDIS devices that
have RNDIS wireless physical medium. At least following devices are
detected:

  Buffalo WLI-U2-KG125S
  U.S. Robotics USR5421
  Belkin F5D7051
  Linksys WUSB54GSv2
  Linksys WUSB54GSC
  Asus WL169gE
  Eminent EM4045
  BT Voyager 1055
  Linksys WUSB54GSv1
  U.S. Robotics USR5420
  BUFFALO WLI-USB-G54

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/Kconfig

@@ -545,6 +545,34 @@ config USB_ZD1201
 	  To compile this driver as a module, choose M here: the
 	  module will be called zd1201.
 
+config USB_NET_RNDIS_WLAN
+	tristate "Wireless RNDIS USB support"
+	depends on USB && WLAN_80211 && EXPERIMENTAL
+	select USB_USBNET
+	select USB_NET_CDCETHER
+	select USB_NET_RNDIS_HOST
+	select WIRELESS_EXT
+	---help---
+	  This is a driver for wireless RNDIS devices.
+	  These are USB based adapters found in devices such as:
+
+	  Buffalo WLI-U2-KG125S
+	  U.S. Robotics USR5421
+	  Belkin F5D7051
+	  Linksys WUSB54GSv2
+	  Linksys WUSB54GSC
+	  Asus WL169gE
+	  Eminent EM4045
+	  BT Voyager 1055
+	  Linksys WUSB54GSv1
+	  U.S. Robotics USR5420
+	  BUFFALO WLI-USB-G54
+
+	  All of these devices are based on Broadcom 4320 chip which is the
+	  only wireless RNDIS chip known to date.
+
+	  If you choose to build a module, it'll be called rndis_wlan.
+
 config RTL8180
 	tristate "Realtek 8180/8185 PCI support"
 	depends on MAC80211 && PCI && WLAN_80211 && EXPERIMENTAL