iommu/arm-smmu-qcom: Add SM6375 SMMUv2

SM6375 uses a qcom,smmu-v2-style SMMU just for Adreno and friends.
Add a compatible for it.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230810-topic-lost_smmu_compats-v1-4-64a0d8749404@linaro.org


Signed-off-by: Will Deacon <will@kernel.org>