ieee802154: 6lowpan: rename to core

This patch renames the 6lowpan_rtnl.c file to core.c. 6lowpan_rtnl.c
contains functionality to put all 802.15.4 6LoWPAN functionality
together.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/ieee802154/6lowpan/Makefile

diff --git a/net/ieee802154/6lowpan/Makefile b/net/ieee802154/6lowpan/Makefile
index 7f11c13..2f1b75a 100644
--- a/net/ieee802154/6lowpan/Makefile
+++ b/net/ieee802154/6lowpan/Makefile
@@ -1,3 +1,3 @@
 obj-y += ieee802154_6lowpan.o
 
-ieee802154_6lowpan-y := 6lowpan_rtnl.o rx.o reassembly.o tx.o
+ieee802154_6lowpan-y := core.o rx.o reassembly.o tx.o

net/ieee802154/6lowpan/core.c

diff --git a/net/ieee802154/6lowpan/6lowpan_rtnl.c b/net/ieee802154/6lowpan/core.c
similarity index 100%
rename from net/ieee802154/6lowpan/6lowpan_rtnl.c
rename to net/ieee802154/6lowpan/core.c