iommu: disable smmu stalls on faulty transactions

Disable the SMMU stalls on faulty transactions by terminating it using
the CB.SCTLR register. Faulty transaction on a CB causes the back
pressure on the QSMMU transaction pipe which inturn affect the other
masters using the same SMMU. Pass the DOMAIN_ATTR_CB_STALL_DISABLE flag
to iommu_domain_set_attr api in order to use this feature.

Change-Id: Ib8fa35854ff24e0295d330c5fb79375f58c3e841
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>