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

dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Document the X1E80100 QMP PCIe PHY Gen4 x8

PCIe 3rd instance of X1E80100 supports Gen 4 x8 which needs different
8 lane capable QMP PCIe PHY with hardware revision v6.30. Document Gen
4 x8 PHY as separate module.

Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20241017030412.265000-2-quic_qianyu@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>