net: phy: motorcomm: Add support for PHY LEDs on YT8531The LED registers on YT8531 are exactly same as YT8521, so simplyreuse yt8521_led_hw_* functions.Tested on OrangePi R1 Plus LTS and Zero3.Signed-off-by: Tianling Shen <cnsztl@gmail.com>Reviewed-by: Andrew Lunn <andrew@lunn.ch>Reviewed-by: Jijie Shao<shaojijie@huawei.com>Link: https://patch.msgid.link/20251026133652.1288732-1-cnsztl@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>