mac80211: rewrite Kconfig text for mesh

Lubomir Rintel recently pointed out a dead link for o11s.org, and
repointed it to a still live, but also stale website.  As far as I
know, no one is updating the content at open80211s.org.

Since this Kconfig text was originally written, though, the 802.11s
mesh drafts were approved and ultimately rolled into 802.11 proper.
Meanwhile, the implementation has converged on the final standard,
so we can lose all of the text here and provide something that's a
little more helpful and accurate.
Signed-off-by: NBob Copeland <bobcopeland@fb.com>
Reviewed-by: NLubomir Rintel <lkundrak@v3.sk>
Reviewed-by: NSteve deRosier <derosier@cal-sierra.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

net/mac80211/Kconfig

@@ -57,14 +57,13 @@ comment "Some wireless drivers require a rate control algorithm"
 	depends on MAC80211 && MAC80211_HAS_RC=n
 
 config MAC80211_MESH
-	bool "Enable mac80211 mesh networking (pre-802.11s) support"
+	bool "Enable mac80211 mesh networking support"
 	depends on MAC80211
 	---help---
-	 This options enables support of Draft 802.11s mesh networking.
-	 The implementation is based on Draft 2.08 of the Mesh Networking
-	 amendment.  However, no compliance with that draft is claimed or even
-	 possible, as drafts leave a number of identifiers to be defined after
-	 ratification.  For more information visit http://o11s.org/.
+	  Select this option to enable 802.11 mesh operation in mac80211
+	  drivers that support it.  802.11 mesh connects multiple stations
+	  over (possibly multi-hop) wireless links to form a single logical
+	  LAN.
 
 config MAC80211_LEDS
 	bool "Enable LED triggers"