dt-bindings: iommu: arm,smmu: enable clocks for sa8775p Adreno SMMU

The GPU SMMU will require the clocks property to be set so put the
relevant compatible into the adreno if-then block.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230417125844.400782-5-brgl@bgdev.pl


[will: Fixed conflict with 'qcom,sc8280xp-smmu-500' entry]
Signed-off-by: Will Deacon <will@kernel.org>