net: mdio: Move mdiobus_c45_addr() next to users

Now that mdiobus_c45_addr() is only used within the MDIO code during
fallback, move the function next to its only users. This function
should not be used any more in drivers, the c45 helpers should be used
in its place, so hiding it away will prevent any new users from being
added.

Signed-off-by: Andrew Lunn <[e-mail]>
Signed-off-by: Michael Walle <[e-mail]>
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/phy/mdio_bus.c

···
 }
 EXPORT_SYMBOL_GPL(__mdiobus_modify_changed);
 
+static u32 mdiobus_c45_addr(int devad, u16 regnum)
+{
+	return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum;
+}
+
 /**
  * __mdiobus_c45_read - Unlocked version of the mdiobus_c45_read function
  * @bus: the mii_bus struct

include/linux/mdio.h

···
 				      mask, set);
 }
 
-static inline u32 mdiobus_c45_addr(int devad, u16 regnum)
-{
-	return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum;
-}
-
 static inline u16 mdiobus_c45_regad(u32 regnum)
 {
 	return FIELD_GET(MII_REGADDR_C45_MASK, regnum);