net_failover: Use netdev_features_t instead of u32

The features mask needs to be a netdev_features_t (u64) because a u32
is not big enough.

Fixes: cfc80d9a1163 ("net: Introduce net_failover driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/net_failover.c

@@ -380,7 +380,8 @@ static rx_handler_result_t net_failover_handle_frame(struct sk_buff **pskb)
 
 static void net_failover_compute_features(struct net_device *dev)
 {
-	u32 vlan_features = FAILOVER_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL;
+	netdev_features_t vlan_features = FAILOVER_VLAN_FEATURES &
+					  NETIF_F_ALL_FOR_ALL;
 	netdev_features_t enc_features  = FAILOVER_ENC_FEATURES;
 	unsigned short max_hard_header_len = ETH_HLEN;
 	unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |