net: phy: mscc: add constants for used interrupt mask bits

Add constants for the used interrupts bits. This avoids the magic
number for MII_VSC85XX_INT_MASK_MASK.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/mscc.c

@@ -80,10 +80,16 @@ enum rgmii_rx_clock_delay {
 #define MSCC_PHY_EXT_PHY_CNTL_2		  24
 
 #define MII_VSC85XX_INT_MASK		  25
-#define MII_VSC85XX_INT_MASK_MASK	  0xa020
-#define MII_VSC85XX_INT_MASK_WOL	  0x0040
+#define MII_VSC85XX_INT_MASK_MDINT	  BIT(15)
+#define MII_VSC85XX_INT_MASK_LINK_CHG	  BIT(13)
+#define MII_VSC85XX_INT_MASK_WOL	  BIT(6)
+#define MII_VSC85XX_INT_MASK_EXT	  BIT(5)
 #define MII_VSC85XX_INT_STATUS		  26
 
+#define MII_VSC85XX_INT_MASK_MASK	  (MII_VSC85XX_INT_MASK_MDINT    | \
+					   MII_VSC85XX_INT_MASK_LINK_CHG | \
+					   MII_VSC85XX_INT_MASK_EXT)
+
 #define MSCC_PHY_WOL_MAC_CONTROL          27
 #define EDGE_RATE_CNTL_POS                5
 #define EDGE_RATE_CNTL_MASK               0x00E0