dt-bindings: iommu: arm,smmu-v3: Relax order of interrupt names

The QEMU devicetree uses a different order for SMMUv3 interrupt names,
and there isn't a good reason for enforcing a specific order. Since all
interrupt lines are optional, operating systems should not expect a
fixed interrupt array layout; they should instead match each interrupt
to its name individually. Besides, as a result of commit e4783856a2e8
("dt-bindings: iommu: arm,smmu-v3: make PRI IRQ optional"), "cmdq-sync"
and "priq" are already permutable. Relax the interrupt-names array
entirely by allowing any permutation, incidentally making the schema
more readable.

Note that dt-validate won't allow duplicate names here so we don't need
to specify maxItems or add additional checks, it's quite neat.

Signed-off-by: Jean-Philippe Brucker <[email protected]>
Acked-by: Will Deacon <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>

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