With this commit OpenCL will track if external host memory is used from
few threads and will secure to update task count in all threads before
destroing allocation.
Resolves: NEO-6807
Signed-off-by: Maciej Plewka <maciej.plewka@intel.com>
Dates corrected in copyright headers to reflect original publication date
(2018 for OpenCL, 2020 for Level Zero).
Signed-off-by: lgotszal <lukasz.gotszald@intel.com>