cfg80211: fix Kconfig for users of cfg80211

* iwm doesn't depend on cfg80211 or wireless extensions
 * rndis wlan selects cfg80211 - needs to depend
 * mac80211 selects cfg80211 - needs to depend

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/Kconfig

@@ -333,11 +333,11 @@ config USB_ZD1201
 config USB_NET_RNDIS_WLAN
 	tristate "Wireless RNDIS USB support"
 	depends on USB && WLAN_80211 && EXPERIMENTAL
+	depends on CFG80211
 	select USB_USBNET
 	select USB_NET_CDCETHER
 	select USB_NET_RNDIS_HOST
 	select WIRELESS_EXT
-	select CFG80211
 	---help---
 	  This is a driver for wireless RNDIS devices.
 	  These are USB based adapters found in devices such as: