batman-adv: Add network_coding and mcast sysfs files to README

Signed-off-by: NSven Eckelmann <sven@narfation.org>
Signed-off-by: NSimon Wunderlich <sw@simonwunderlich.de>

Documentation/networking/batman-adv.txt

@@ -71,10 +71,11 @@ All  mesh  wide  settings  can be found in batman's own interface
 folder:
 
 # ls /sys/class/net/bat0/mesh/
-#aggregated_ogms        distributed_arp_table  gw_sel_class    orig_interval
-#ap_isolation           fragmentation          hop_penalty     routing_algo
-#bonding                gw_bandwidth           isolation_mark  vlan0
-#bridge_loop_avoidance  gw_mode                log_level
+# aggregated_ogms        fragmentation  isolation_mark  routing_algo
+# ap_isolation           gw_bandwidth   log_level       vlan0
+# bonding                gw_mode        multicast_mode
+# bridge_loop_avoidance  gw_sel_class   network_coding
+# distributed_arp_table  hop_penalty    orig_interval
 
 There is a special folder for debugging information: