static s32 ixgbe_x550em_a_mii_bus_write_c45(struct mii_bus *bus, int addr,
					    int devad, int regnum, u16 val)
static int ixgbe_x550em_a_mii_bus_write_c45(struct mii_bus *bus, int addr,
					    int devad, int regnum, u16 val)