mac802154: introduce hw_to_local function

This patch replace the mac802154_to_priv macro with a static inline
function named hw_to_local. This brings a similar naming convention like
mac80211 stack.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
index 34e7e61..c7799fa 100644
--- a/net/mac802154/main.c
+++ b/net/mac802154/main.c
@@ -289,7 +289,7 @@
 
 void ieee802154_free_hw(struct ieee802154_hw *hw)
 {
-	struct ieee802154_local *local = mac802154_to_priv(hw);
+	struct ieee802154_local *local = hw_to_local(hw);
 
 	BUG_ON(!list_empty(&local->interfaces));
 
@@ -301,7 +301,7 @@
 
 int ieee802154_register_hw(struct ieee802154_hw *hw)
 {
-	struct ieee802154_local *local = mac802154_to_priv(hw);
+	struct ieee802154_local *local = hw_to_local(hw);
 	int rc = -ENOSYS;
 
 	if (hw->flags & IEEE802154_HW_TXPOWER) {
@@ -381,7 +381,7 @@
 
 void ieee802154_unregister_hw(struct ieee802154_hw *hw)
 {
-	struct ieee802154_local *local = mac802154_to_priv(hw);
+	struct ieee802154_local *local = hw_to_local(hw);
 	struct ieee802154_sub_if_data *sdata, *next;
 
 	flush_workqueue(local->dev_workqueue);