Merge branch 'add-pcs-support-for-renesas-rz-t2h-n2h-socs'

Lad Prabhakar says:

====================
Add PCS support for Renesas RZ/{T2H,N2H} SoCs

This series aims to add PCS support for the Renesas RZ/T2H and RZ/N2H SoCs
These SoCs include a MII converter (MIIC) that converts MII to RMII/RGMII
or can be set in pass-through mode for MII similar to the RZ/N1 SoC. The
MIIC is used in conjunction with the Ethernet switch (ETHSW) available on
these SoCs.
====================

Link: https://patch.msgid.link/20250910204132.319975-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>