net: hns: Clean redundant code from hns_mdio.c file

This patch cleans the redundant code from  hns_mdio.c.
Reported-by: Ping Zhang <zhangping5@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns_mdio.c

@@ -23,17 +23,9 @@
 #include <linux/phy.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
-#include <linux/spinlock_types.h>
 
 #define MDIO_DRV_NAME "Hi-HNS_MDIO"
 #define MDIO_BUS_NAME "Hisilicon MII Bus"
-#define MDIO_DRV_VERSION "1.3.0"
-#define MDIO_COPYRIGHT "Copyright(c) 2015 Huawei Corporation."
-#define MDIO_DRV_STRING MDIO_BUS_NAME
-#define MDIO_DEFAULT_DEVICE_DESCR MDIO_BUS_NAME
-
-#define MDIO_CTL_DEV_ADDR(x)	(x & 0x1f)
-#define MDIO_CTL_PORT_ADDR(x)	((x & 0x1f) << 5)
 
 #define MDIO_TIMEOUT			1000000
 
@@ -64,9 +56,7 @@ struct hns_mdio_device {
 #define MDIO_CMD_DEVAD_S	0
 #define MDIO_CMD_PRTAD_M	0x1f
 #define MDIO_CMD_PRTAD_S	5
-#define MDIO_CMD_OP_M		0x3
 #define MDIO_CMD_OP_S		10
-#define MDIO_CMD_ST_M		0x3
 #define MDIO_CMD_ST_S		12
 #define MDIO_CMD_START_B	14