dt-bindings: phy: qcom,qmp: Add SM8450 PCIe PHY bindings

dt-bindings: phy: qcom,qmp: Add SM8450 PCIe PHY bindings

There are two different PCIe PHYs on SM8450, one having one lane and
another with two lanes. Add DT bindings for the first one. Support for
second PCIe host and PHY will be submitted separately.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211214225846.2043361-3-dmitry.baryshkov@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>