net: phy: microchip_t1s: add support for Microchip LAN867X Rev.D0 PHY

net: phy: microchip_t1s: add support for Microchip LAN867X Rev.D0 PHY

Add support for the LAN8670/1/2 Rev.D0 10BASE-T1S PHYs from Microchip.
The new Rev.D0 silicon requires a specific set of initialization
settings to be configured for optimal performance and compliance with
OPEN Alliance specifications, as described in Microchip Application Note
AN1699 (Revision G, DS60001699G – October 2025).
https://www.microchip.com/en-us/application-notes/an1699

Signed-off-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251030102258.180061-2-parthiban.veerasooran@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>