dt-bindings: PCI: qcom-ep: Consolidate DMA vs non-DMA cases

dt-bindings: PCI: qcom-ep: Consolidate DMA vs non-DMA cases

On Qualcomm platforms here are two major kinds of PCIe Endpoint
controllers: ones which use eDMA and IOMMU and the ones which do
not (e.g., SDX55 or SDX65). As such, it doesn't make sense to
duplicate similar properties all over the place.

Thus, merge these two cases into a single conditional clause.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20250221-sar2130p-pci-v3-4-61a0fdfb75b4@linaro.org
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>