arm: dma-mapping: Use default iommu domain

When a device probes and arch_setup_dma_ops is called, check if the
device has an associated default iommu_domain. If it does, setup
a virtual address allocator of the type described by the
default domain's attributes.

Mark arm_iommu_create_mapping and arm_iommu_attach_device as
deprecated, since clients will no longer need to use them now that
the iommu framework will associate them with a default domain.

Change-Id: I0721c038c68f0f48b78d50f9a72418dbaed97172
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
Signed-off-by: Qingqing Zhou <qqzhou@codeaurora.org>