[AFS]: Replace rtnetlink client by direct dev_base walking

Replace the large and complicated rtnetlink client by two simple
functions for getting the MAC address for the first ethernet device
and building a list of IPv4 addresses.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/fs/afs/Makefile b/fs/afs/Makefile
index 01545eb..cf83e5d 100644
--- a/fs/afs/Makefile
+++ b/fs/afs/Makefile
@@ -18,7 +18,7 @@
 	security.o \
 	server.o \
 	super.o \
-	use-rtnetlink.o \
+	netdevices.o \
 	vlclient.o \
 	vlocation.o \
 	vnode.o \