be2net: use ARRAY_SIZE for array sizing calculation on array cmd_priv_map

Use the ARRAY_SIZE macro on array cmd_priv_map to determine size of the
array.  Improvement suggested by coccinelle.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/emulex/benet/be_cmds.c

@@ -103,7 +103,7 @@ static struct be_cmd_priv_map cmd_priv_map[] = {
 static bool be_cmd_allowed(struct be_adapter *adapter, u8 opcode, u8 subsystem)
 {
 	int i;
-	int num_entries = sizeof(cmd_priv_map)/sizeof(struct be_cmd_priv_map);
+	int num_entries = ARRAY_SIZE(cmd_priv_map);
 	u32 cmd_privileges = adapter->cmd_privileges;
 
 	for (i = 0; i < num_entries; i++)