arm64: dts: qcom: sar2130p: add PCIe EP device nodes

arm64: dts: qcom: sar2130p: add PCIe EP device nodes

On the Qualcomm AR2 Gen1 platform the second PCIe host can be used
either as an RC or as an EP device. Add device node for the PCIe EP.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20250221-sar2130p-pci-v3-7-61a0fdfb75b4@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>