dmaengine: gpi: Add support for SMMU S1 translation

GPI dma controller sits behind a SMMU translator. Add
support for SMMU S1 translation for increase security.

CRs-Fixed: 2102639
Change-Id: I797e1fda48c989872ad866f4b8f8fbe079c24dac
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>