{nl,cfg,mac}80211: let userspace set RANN interval

Allow userspace to set Root Announcement Interval for our mesh
interface. Also, RANN interval is now in proper units of TUs.

Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 5c11608..b5a39d4 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -12,6 +12,7 @@
 #define MESH_HOLD_T 		100
 
 #define MESH_PATH_TIMEOUT	5000
+#define MESH_RANN_INTERVAL      5000
 
 /*
  * Minimum interval between two consecutive PREQs originated by the same
@@ -49,6 +50,7 @@
 	.dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES,
 	.path_refresh_time = MESH_PATH_REFRESH_TIME,
 	.min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
+	.dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL,
 };
 
 const struct mesh_setup default_mesh_setup = {