net: unexport netdev_fix_features()

It is not used anywhere except net/core/dev.c now.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netdevice.h

@@ -2529,7 +2529,6 @@ static inline u32 netdev_get_wanted_features(struct net_device *dev)
 	return (dev->features & ~dev->hw_features) | dev->wanted_features;
 }
 u32 netdev_increment_features(u32 all, u32 one, u32 mask);
-u32 netdev_fix_features(struct net_device *dev, u32 features);
 int __netdev_update_features(struct net_device *dev);
 void netdev_update_features(struct net_device *dev);
 void netdev_change_features(struct net_device *dev);

net/core/dev.c

@@ -5209,7 +5209,7 @@ static void rollback_registered(struct net_device *dev)
 	list_del(&single);
 }
 
-u32 netdev_fix_features(struct net_device *dev, u32 features)
+static u32 netdev_fix_features(struct net_device *dev, u32 features)
 {
 	/* Fix illegal checksum combinations */
 	if ((features & NETIF_F_HW_CSUM) &&
@@ -5268,7 +5268,6 @@ u32 netdev_fix_features(struct net_device *dev, u32 features)
 
 	return features;
 }
-EXPORT_SYMBOL(netdev_fix_features);
 
 int __netdev_update_features(struct net_device *dev)
 {