nl80211: prepare for non-netdev wireless devs

In order to support a P2P device abstraction and
Bluetooth high-speed AMPs, we need to have a way
to identify virtual interfaces that don't have a
netdev associated.

Do this by adding a NL80211_ATTR_WDEV attribute
to identify a wdev which may or may not also be
a netdev.

To simplify things, use a 64-bit value with the
high 32 bits being the wiphy index for this new
wdev identifier in the nl80211 API.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/util.c b/net/wireless/util.c
index e31f1db..f7a0647 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -793,7 +793,7 @@
 
 	mutex_lock(&rdev->devlist_mtx);
 
-	list_for_each_entry(wdev, &rdev->netdev_list, list)
+	list_for_each_entry(wdev, &rdev->wdev_list, list)
 		cfg80211_process_wdev_events(wdev);
 
 	mutex_unlock(&rdev->devlist_mtx);
@@ -994,7 +994,7 @@
 
 	mutex_lock(&rdev->devlist_mtx);
 
-	list_for_each_entry(wdev, &rdev->netdev_list, list) {
+	list_for_each_entry(wdev, &rdev->wdev_list, list) {
 		if (!wdev->beacon_interval)
 			continue;
 		if (wdev->beacon_interval != beacon_int) {
@@ -1050,7 +1050,7 @@
 		break;
 	}
 
-	list_for_each_entry(wdev_iter, &rdev->netdev_list, list) {
+	list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
 		if (wdev_iter == wdev)
 			continue;
 		if (!netif_running(wdev_iter->netdev))