iommu/arm-smmu: Mark S1 bypass domains as UNMANAGED domains

Mark IOMMU domains with S1 bypass enabled as UNMANAGED domains.
This prevents the IOMMU framework from allocating and using
unnecessary resources (e.g. IOVA structures) for these domains,
and ensures that the right set of operations are used when
mapping memory for devices that belong to such domains.

Change-Id: Ifd72d16e865e65e6d5605ae81caab416f4aa7bf4
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>