core/ocl: temporary move device selection from ocl module
fixes
morphology
some fixes
not synchronous kernel's run
ported cv::calcBackProject to T-API
removed unnecessary data copying
fixed warning [ -Wreorder ]
hope last fix
Merge pull request #2054 from alalek:ocl_tapi_dev_selection
added cv::calcBackProject for 2-dimensional histograms
Merge pull request #2028 from KonstantinMatskevich:ocl_tapi_morphology
Merge pull request #2066 from ilya-lavrenov:tapi_ocl
Merge pull request #2065 from ilya-lavrenov:tapi_calcBackProject