Merge branch 'disable-clkout-on-rtl8211f-d-i-vd-cg'

Vladimir Oltean says:

====================
Disable CLKOUT on RTL8211F(D)(I)-VD-CG

The Realtek RTL8211F(D)(I)-VD-CG is similar to other RTL8211F models in
that the CLKOUT signal can be turned off - a feature requested to reduce
EMI, and implemented via "realtek,clkout-disable" as documented in
Documentation/devicetree/bindings/net/realtek,rtl82xx.yaml.

It is also dissimilar to said PHY models because it has no PHYCR2
register, and disabling CLKOUT is done through some other register.

The strategy adopted in this 6-patch series is to make the PHY driver
not think in terms of "priv->has_phycr2" and "priv->phycr2", but of more
high-level features ("priv->disable_clk_out") while maintaining behaviour.
Then, the logic is extended for the new PHY.

Very loosely based on previous work from Clark Wang, who took a
different approach, to pretend that the RTL8211FVD_CLKOUT_REG is
actually this PHY's PHYCR2.
====================

Link: https://patch.msgid.link/20251117234033.345679-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>