[NETLINK]: Restore API compatibility of address and neighbour bits

[Thomas Graf]

Restore API compatibility due to bits moved from rtnetlink.h to
separate headers.

Signed-off-by: Thomas Graf <tgraf@suug.ch>

Index: net-2.6/include/linux/rtnetlink.h
===================================================================
--- net-2.6.orig/include/linux/rtnetlink.h	2006-12-07 11:25:29.000000000 +0100
+++ net-2.6/include/linux/rtnetlink.h	2006-12-07 11:32:25.000000000 +0100
@@ -3,6 +3,8 @@
 
 #include <linux/netlink.h>
 #include <linux/if_link.h>
+#include <linux/if_addr.h>
+#include <linux/neighbour.h>
 
 /****
  *		Routing/neighbour discovery messages.