iommu/arm-smmu: Ensure IAS is set correctly for AArch32-capable SMMUs
iommu/arm-smmu: Ensure IAS is set correctly for AArch32-capable SMMUs

AArch32-capable SMMU implementations have a minimum IAS of 40 bits, so
ensure that is reflected in the stage-2 page table configuration.

Signed-off-by: Will Deacon <b913f13ef92ac157955c954ccaaff7be065faba4@arm.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs