iommu: Remove IOMMU_OF_DECLARE

iommu: Remove IOMMU_OF_DECLARE

Now that we use the driver core to stop deferred probe for missing
drivers, IOMMU_OF_DECLARE can be removed.

This is slightly less optimal than having a list of built-in drivers in
that we'll now defer probe twice before giving up. This shouldn't have a
significant impact on boot times as past discussions about deferred
probe have given no evidence of deferred probe having a substantial
impact.

Cc: Robin Murphy <[email protected]>
Cc: Kukjin Kim <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Rob Clark <[email protected]>
Cc: Heiko Stuebner <[email protected]>
Cc: Frank Rowand <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Acked-by: Will Deacon <[email protected]>
Acked-by: Marek Szyprowski <[email protected]>
Acked-by: Joerg Roedel <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>