phy: mdio-cavium: Add missing MODULE_* annotations.

When the code was factored out of mdio-octeon.c, the
MODULE_DESCRIPTION, MODULE_AUTHOR and MODULE_LICENSE annotations were
inadvertently omitted. Restore them so that we don't get kernel taint
warnings upon module loading.

Signed-off-by: David Daney <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/phy/mdio-cavium.c

···
 	return 0;
 }
 EXPORT_SYMBOL(cavium_mdiobus_write);
+
+MODULE_DESCRIPTION("Common code for OCTEON and Thunder MDIO bus drivers");
+MODULE_AUTHOR("David Daney");
+MODULE_LICENSE("GPL");