Merge branch 'net-at803x-cleanups'

Christian Marangi says:

====================
net: phy: at803x: cleanup

The intention of this big series is to try to cleanup the big
at803x PHY driver.

It currently have 3 different family of PHY in it. at803x, qca83xx
and qca808x.

The current codebase required lots of cleanup and reworking to
make the split possible as currently there is a greater use of
adding special function matching the phy_id.

This has been reworked to make the function actually generic
and make the change only in more specific one. The result
is the addition of micro additional function but that is for good
as it massively simplify splitting the driver later.

Consider that this is all in preparation for the addition of
qca807x PHY driver that will also uso some of the functions of
at803x.

Subsequent series will come with the actual PHY split and other
required cleanup. This is only to start the process with minor
changes.

Changes v4:
- Improve at8031_probe function
Changes v3:
- Add Reviewed-by tag from Andrew
- Split patch 10 (at8031 rename) to rename and move
Changes v2:
- Drop split part due to series too big
- Split changes even more
- Fix problem pointed out by Russell (flawed reworked function logic)
- Add Reviewed-by tag from Andrew
- Minor rework to prevent further code duplication for cdt
====================

Signed-off-by: David S. Miller <davem@davemloft.net>