HACK: gpu: ion: Add api to remap dma address.

Change-Id: Ib68612c6a1e003938fa6df009df85e9cb4599b11
Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-on: http://git-master/r/76784
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Hiroshi Doyu <hdoyu@nvidia.com>