libertas: select WIRELESS_EXT

Ensure that libertas selects WIRELESS_EXT, since selecting other stuff that
should depend on WEXT, like IEEE80211, doesn't seem to drag that in for us.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index 2b733c5..5583719 100644
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -264,6 +264,7 @@
 config LIBERTAS
 	tristate "Marvell 8xxx Libertas WLAN driver support"
 	depends on WLAN_80211
+	select WIRELESS_EXT
 	select IEEE80211
 	select FW_LOADER
 	---help---