ARM: dts: msm: Enable SMMU stage 1 for Slimbus driver on atoll

This reverts commit 4145b6b0.
Revert "ARM: dts: msm: Enable SMMU stage 1 for Slimbus driver
on atoll"

This change is reverted as the actual fix is identified and
getting mainlined along with this change. The actual fix is
to check is to add a check for iommu device handler before
doing dma_free_coherent as a part of SSR clean up. This
change ensures we use same dev handle for allocating and
freeing the DMA memory.

Change-Id: If0fa9e1d32e5ccd2a2fee6b0a23930132c536ab1
Signed-off-by: Prudhvi Yarlagadda <pyarlaga@codeaurora.org>