net: mdio: realtek-rtl9300: Add I/O register

The MDIO data that needs to be written or read to registers of the
controller is handled by an I/O register. Add that to the register
structure and make use of it where needed.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://patch.msgid.link/20260521175918.1494797-8-markus.stockhausen@gmx.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Markus Stockhausen 2026-05-21 19:59:16 +02:00 • committed by Paolo Abeni
commit ffc92cd009