iommu: qcom-smmu: add qcom generic compatible

With the exception of SDM845, most other Qualcomm SoCs have the Qualcomm
specific (but not SoC) specific SMMU compatible string. Add it here so
we can match those without having to add individual SoCs to the list
here.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

drivers/iommu/qcom-hyp-smmu.c

@@ -381,6 +381,7 @@ static struct iommu_ops qcom_smmu_ops = {
 
 static const struct udevice_id qcom_smmu500_ids[] = {
 	{ .compatible = "qcom,sdm845-smmu-500" },
+	{ .compatible = "qcom,smmu-500", },
 	{ /* sentinel */ }
 };