8ac20e5e38
Fixed an error in the CMakeLists.txt USE_PERF_API option declaration that was making it always disabled. Fixing this exposed an issue with the hip_prof_gen.py script's handling of function variants (for example, _spt functions) and new HIP_INIT_API_* macros. Also switched the python interpreter to python3 as python2 may not be available by default on the build system. Change-Id: I971fc9edcc746ca63a2bdf4f540e755f9a80fe69