ARM: dts: msm: add qcom,disable-atos for smmu on qcs405

Define qcom,disable-atos property for smmu device nodes to disable the
ATOS operation that is undefined in qcs405.
Also rename phandle from apps_iommu to apps_smmu.

Change-Id: I1307cc176989fa8c65789ecf8be4b1c839dc1f67
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>