6lowpan: move 6lowpan.c to 6lowpan_rtnl.c

We have a 6lowpan.c file and 6lowpan.ko file. To avoid confusing we
should move 6lowpan.c to 6lowpan_rtnl.c. Then we can support multiple
source files for 6lowpan module.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan_rtnl.c
similarity index 100%
rename from net/ieee802154/6lowpan.c
rename to net/ieee802154/6lowpan_rtnl.c
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index e8f0588..3d08adf 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -2,5 +2,6 @@
 obj-$(CONFIG_IEEE802154_6LOWPAN) += 6lowpan.o
 obj-$(CONFIG_6LOWPAN_IPHC) += 6lowpan_iphc.o
 
+6lowpan-y := 6lowpan_rtnl.o
 ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o
 af_802154-y := af_ieee802154.o raw.o dgram.o