iommu: msm: Add cache maintenance for calls into TZ

The scm_call API is no longer providing implicit cache maintenance for
shared buffers. Add cache flushing for buffers heading towards TZ and
cache invalidation for buffers coming from TZ.

Change-Id: I21a60f912bf73daeaa9ade99c3af755db9665e25
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
1 file changed