As the mdio bus has been hardened and can now handle c45 requests
the DSA driver must honor that as well. For this
- add proper upstreamed bus read_c45 and write_c45 functions
- take over the disabled port mask from upstream bus
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/18935
Signed-off-by: Robert Marko <robimarko@gmail.com>