[BRIDGE]: features change notification

Resend of earlier patch (no changes) from Catalin used to provide
device feature change notification.

Signed-off-by: Catalin BOIE <catab at umbrella.ro>
Acked-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index d4d9e26..f15a3ff 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -761,6 +761,18 @@
 }
 
 /**
+ *	netdev_features_change - device changes fatures
+ *	@dev: device to cause notification
+ *
+ *	Called to indicate a device has changed features.
+ */
+void netdev_features_change(struct net_device *dev)
+{
+	notifier_call_chain(&netdev_chain, NETDEV_FEAT_CHANGE, dev);
+}
+EXPORT_SYMBOL(netdev_features_change);
+
+/**
  *	netdev_state_change - device changes state
  *	@dev: device to cause notification
  *