iommu: msm: Allow passing dma_attrs for lazy mapping

The msm lazy mapping APIs did not allow to pass in
dma attributes that could be passed to the dma-mapping
driver. This patch allows users to specify dma attributes for the
msm lazy mappings.

Change-Id: I3e4cd2bb99d205dce78083a256f4d444d865f3cc
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>