[S390] Kconfig: no wireless on s390.

Hide the config menues for wireless on s390.

Cc: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index e273347..e3f5bb0 100644
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -3,6 +3,7 @@
 #
 
 menu "Wireless LAN"
+	depends on !S390
 
 config WLAN_PRE80211
 	bool "Wireless LAN (pre-802.11)"