Add the Airoha EN8811H 2.5 Gigabit PHY.

The en8811h phy can be set with serdes polarity reversed on rx and/or tx.
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240326162305.303598-2-ericwouds@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>