batman-adv: Remove unnecessary length qualifier in %14pM

It's misleading and unnecessary.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

net/batman-adv/distributed-arp-table.c

@@ -834,7 +834,7 @@ int batadv_dat_cache_seq_print_text(struct seq_file *seq, void *offset)
 			last_seen_msecs = last_seen_msecs % 60000;
 			last_seen_secs = last_seen_msecs / 1000;
 
-			seq_printf(seq, " * %15pI4 %14pM %4i %6i:%02i\n",
+			seq_printf(seq, " * %15pI4 %pM %4i %6i:%02i\n",
 				   &dat_entry->ip, dat_entry->mac_addr,
 				   batadv_print_vid(dat_entry->vid),
 				   last_seen_mins, last_seen_secs);