6lowpan: change naming for lowpan private data

This patch changes the naming for interface private data for lowpan
intefaces. The current private data scheme is:

-------------------------------------------------
|    6LoWPAN Generic   |    LinkLayer 6LoWPAN   |
-------------------------------------------------

the current naming schemes are:

- 6LoWPAN Generic:
  - lowpan_priv
- LinkLayer 6LoWPAN:
  - BTLE
    - lowpan_dev
  - 802.15.4:
    - lowpan_dev_info

the new naming scheme with this patch will be:

- 6LoWPAN Generic:
  - lowpan_dev
- LinkLayer 6LoWPAN:
  - BTLE
    - lowpan_btle_dev
  - 802.15.4:
    - lowpan_802154_dev

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Reviewed-by: Stefan Schmidt<stefan@osg.samsung.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h
index da3a77d..f204664 100644
--- a/include/net/6lowpan.h
+++ b/include/net/6lowpan.h
@@ -93,7 +93,7 @@
 }
 
 #define LOWPAN_PRIV_SIZE(llpriv_size)	\
-	(sizeof(struct lowpan_priv) + llpriv_size)
+	(sizeof(struct lowpan_dev) + llpriv_size)
 
 enum lowpan_lltypes {
 	LOWPAN_LLTYPE_BTLE,
@@ -129,7 +129,7 @@
 	return test_bit(LOWPAN_IPHC_CTX_FLAG_COMPRESSION, &ctx->flags);
 }
 
-struct lowpan_priv {
+struct lowpan_dev {
 	enum lowpan_lltypes lltype;
 	struct dentry *iface_debugfs;
 	struct lowpan_iphc_ctx_table ctx;
@@ -139,7 +139,7 @@
 };
 
 static inline
-struct lowpan_priv *lowpan_priv(const struct net_device *dev)
+struct lowpan_dev *lowpan_dev(const struct net_device *dev)
 {
 	return netdev_priv(dev);
 }