This commits moves debugData and debugDataSize to buildInfos vector (per
root device).
- debug data is now stored per device instead of per cl_program
- added creation of debug data (incl. debug zebin) and its returning in
clGetProgramInfo (CL_PROGRAM_DEBUG_INFO_INTEL).
Related-To: NEO-6463
Signed-off-by: Kacper Nowak <kacper.nowak@intel.com>