net: phy: motorcomm: Optimize phy speed mask to be compatible to YT8821

YT8531 as Gigabit transceiver uses bit15:14(bit9 reserved default 0) as phy
speed mask, YT8821 as 2.5 Gigabit transceiver uses bit9 bit15:14 as phy
speed mask.

Be compatible to YT8821, reform phy speed mask and phy speed macro.

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