net: No need to swap ll address in IPv6 module

The L2 layer sender should actually set the link layer addresses
properly.

Change-Id: I9dd2f9ca269384dff0bef12e570317173f6a5f02
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
diff --git a/net/yaip/ipv6.c b/net/yaip/ipv6.c
index 235972a..c9d188f 100644
--- a/net/yaip/ipv6.c
+++ b/net/yaip/ipv6.c
@@ -592,7 +592,6 @@
 send_na:
 	llao_len = get_llao_len(net_nbuf_iface(buf));
 
-	net_nbuf_ll_swap(buf);
 	net_nbuf_set_ext_len(buf, 0);
 
 	setup_headers(buf, sizeof(struct net_icmpv6_na_hdr) + llao_len,