dt-bindings: iommu: Convert QCOM IOMMU to YAML

Convert the Qualcomm IOMMU bindings to YAML.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230406-topic-qciommu-v3-1-aa0e4f018191@linaro.org


Signed-off-by: Rob Herring <robh@kernel.org>