5f326eef38
HIP should block the stream until callback is done. This change
will introduce extra marker that will block the queue.
Note: MT path doesn't really require extra marker, but the logic
is identical to avoid extra checks for direct dispatch
Change-Id: Ib90fd2d751adf337f5e43ac6098e84767530233b
[ROCm/hip commit: e43696d7ca]