Describe the SGMII/SerDes PHY present on the sa8775p platforms.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230619091336.194914-3-brgl@bgdev.plSigned-off-by: Vinod Koul <vkoul@kernel.org>