net: phy: motorcomm: Add driver for Motorcomm YT8821 2.5G ethernet phy

Add a driver for the motorcomm YT8821 2.5G ethernet phy which works in
2500base-x mode.

Verify the driver on BPI-R3(with MediaTek MT7986(Filogic 830) SoC) evb.

Signed-off-by: Frank Sae <Frank.Sae@motor-comm.com>
1 file changed