ipv4: Include linux/prefetch.h in fib_trie.c

Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/fib_trie.c

@@ -67,6 +67,7 @@
 #include <linux/if_arp.h>
 #include <linux/proc_fs.h>
 #include <linux/rcupdate.h>
+#include <linux/prefetch.h>
 #include <linux/skbuff.h>
 #include <linux/netlink.h>
 #include <linux/init.h>