dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Document the X1E80100 QMP PCIe PHYs

Document the QMP PCIe PHYs on the X1E80100 platform.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20231223-x1e80100-phy-pcie-v2-1-223c0556908a@linaro.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>