bonding: use nla_get_u64 to extract the value for IFLA_BOND_AD_ACTOR_SYSTEM

bond_opt_initval expects a u64 type param, it's better to use
nla_get_u64 to extract the value here, to eliminate a sparse
endianness mismatch warning.

Fixes: 171a42c3 ("bonding: add netlink support for sys prio, actor sys mac, and port key")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_netlink.c

@@ -423,7 +423,7 @@ static int bond_changelink(struct net_device *bond_dev, struct nlattr *tb[],
 			return -EINVAL;
 
 		bond_opt_initval(&newval,
-				 nla_get_be64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
+				 nla_get_u64(data[IFLA_BOND_AD_ACTOR_SYSTEM]));
 		err = __bond_opt_set(bond, BOND_OPT_AD_ACTOR_SYSTEM, &newval);
 		if (err)
 			return err;