mediatek: add Motorcomm PHY support to Cudy AP3000 v1
Newer Cudy AP3000 v1 routers feature a Motorcomm YT8821 PHY
instead of the Realtek PHY [1]. Support for the YT8821
was recently introduced for the Cudy WR3000H router [2].
On the AP3000, the changes allow the PHY to be autodetected.
[1]: https://forum.openwrt.org/t/cudy-ap3000-v1-indoor-wan-motorcomm-yt8821-support/245491
[2]: https://github.com/openwrt/openwrt/pull/21399
Signed-off-by: Anton Danilov <frimen.c@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/21776
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>