Merge branch 'net-stmmac-dwmac-qcom-ethqos-add-support-for-emac4'

Bartosz Golaszewski says:

====================
net: stmmac: dwmac-qcom-ethqos: add support for EMAC4

Extend the dwmac-qcom-ethqos driver to support EMAC4. While at it: rework the
code somewhat. The bindings have been reviewed by DT maintainers.

This is a sub-series of [1] with only the patches targetting the net subsystem
as they can go in independently.

[1] https://lore.kernel.org/lkml/20230617001644.4e093326@kernel.org/T/
====================

Link: https://lore.kernel.org/r/20230619092402.195578-1-brgl@bgdev.pl


Signed-off-by: Jakub Kicinski <kuba@kernel.org>