qed: Replace memset with eth_zero_addr

qed: Replace memset with eth_zero_addr

Orabug: 25477939

Use eth_zero_addr to assign zero address to the given address array
instead of memset when the second argument in memset is address
of zero. Also, it makes the code clearer

Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 0ee28e31553a6f2ed13223e565ae5a4d7a376942)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Conflicts:
	drivers/net/ethernet/qlogic/qed/qed_sriov.c