batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

The call to batadv_nc_skb_forward() fits better in
batadv_send_skb_to_orig(), as this is where the actual next hop is
looked up.

To let the caller of batadv_send_skb_to_orig() know wether the skb is
transmitted, buffered or failed, the return value is changed from
boolean to int.

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c
index 0bb3b59..dc8b5d4 100644
--- a/net/batman-adv/unicast.c
+++ b/net/batman-adv/unicast.c
@@ -464,7 +464,7 @@
 		goto out;
 	}
 
-	if (batadv_send_skb_to_orig(skb, orig_node, NULL))
+	if (batadv_send_skb_to_orig(skb, orig_node, NULL) != NET_XMIT_DROP)
 		ret = 0;
 
 out: