net: dsa: mv88e6xxx: define GLOBAL_ATU_FID

Define register GLOBAL_ATU_FID instead of the raw value 0x01.
Signed-off-by: NVivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/dsa/mv88e6xxx.c

@@ -964,7 +964,7 @@ static int _mv88e6xxx_atu_cmd(struct dsa_switch *ds, int fid, u16 cmd)
 {
 	int ret;
 
-	ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, 0x01, fid);
+	ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, GLOBAL_ATU_FID, fid);
 	if (ret < 0)
 		return ret;
 

drivers/net/dsa/mv88e6xxx.h

@@ -169,6 +169,7 @@
 #define GLOBAL_MAC_01		0x01
 #define GLOBAL_MAC_23		0x02
 #define GLOBAL_MAC_45		0x03
+#define GLOBAL_ATU_FID		0x01	/* 6097 6165 6351 6352 */
 #define GLOBAL_CONTROL		0x04
 #define GLOBAL_CONTROL_SW_RESET		BIT(15)
 #define GLOBAL_CONTROL_PPU_ENABLE	BIT(14)