Would something like this work?

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quoted

From 36c0b3f04ebfa51e52bd1bc2dc447d12d1c6e119 Mon Sep 17 00:00:00 2001

From: Vladimir Oltean <olteanv@gmail.com>
Date: Tue, 18 May 2021 19:39:18 +0300
Subject: [PATCH] net: mdio: provide shim implementation of
 devm_of_mdiobus_register

Similar to the way in which of_mdiobus_register() has a fallback to the
non-DT based mdiobus_register() when CONFIG_OF is not set, we can create
a shim for the device-managed devm_of_mdiobus_register() which calls
devm_mdiobus_register() and discards the struct device_node *.

In particular, this solves a build issue with the qca8k DSA driver which
uses devm_of_mdiobus_register and can be compiled without CONFIG_OF.

Reported-by: Randy Dunlap <redacted>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>

This should be O.K.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

Thanks
    Andrew