lib80211: silence excessive crypto debugging messages

When they were part of the now defunct ieee80211 component, these
messages were only visible when special debugging settings were enabled.
Let's mirror that with a new lib80211 debugging Kconfig option.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index e28e2b8..092ae6f 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -102,3 +102,13 @@
 
 config LIB80211_CRYPT_TKIP
 	tristate
+
+config LIB80211_DEBUG
+	bool "lib80211 debugging messages"
+	depends on LIB80211
+	default n
+	---help---
+	  You can enable this if you want verbose debugging messages
+	  from lib80211.
+
+	  If unsure, say N.