Merge Pull Request from: @wang-yufen316 
 
This is achieved by broadcasting ARP or ND packets to all of its slave devices on transmit side. The switch will take further actions based on proper configuration.
A new sysctl knob "net.bonding.broadcast_arp_or_nd" is introduced which controls the behaviour of broadcasting. 
 
Link:https://gitee.com/openeuler/kernel/pulls/346 

Reviewed-by: Yue Haibing <yuehaibing@huawei.com> 
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> 
Acked-by: Xie XiuQi <xiexiuqi@huawei.com>