bridge: Use ether_addr_copy and ETH_ALEN

Convert the more obvious uses of memcpy to ether_addr_copy.

There are still uses of memcpy that could be converted but
these addresses are __aligned(2).

Convert a couple uses of 6 in gr_private.h to ETH_ALEN.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index bf34451..b063050 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -367,7 +367,7 @@
 	br->bridge_id.prio[0] = 0x80;
 	br->bridge_id.prio[1] = 0x00;
 
-	memcpy(br->group_addr, eth_reserved_addr_base, ETH_ALEN);
+	ether_addr_copy(br->group_addr, eth_reserved_addr_base);
 
 	br->stp_enabled = BR_NO_STP;
 	br->group_fwd_mask = BR_GROUPFWD_DEFAULT;