Merge branch 'net-stmmac-mdio-related-cleanups'

Russell King says:

====================
net: stmmac: mdio related cleanups

The first four patches clean up the MDC clock divisor selection code,
turning the three different ways we choose a divisor into tabular form,
rather than doing the selection purely in code.

Convert MDIO to use field_prep() which allows a non-constant mask to be
used when preparing fields.

Then use u32 and the associated typed GENMASK for MDIO register field
definitions.

Finally, an extra couple of patches that use appropriate types in
struct mdio_bus_data.
====================

Link: https://patch.msgid.link/aald--qJquWGIvmO@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>