New files:
drivers/net/phy/mdio-private.h

Modified files:
drivers/net/mdio/fwnode_mdio.c
drivers/net/phy/mdio_bus.c
drivers/net/phy/mdio_device.c

Checking coverage for a new file: drivers/net/phy/mdio-private.h
  Section ETHERNET PHY LIBRARY covers ~224 files
  Section NETWORKING DRIVERS covers ~7372 files
  Section THE REST covers ~750137 files
 MIN 224