90927a5ec6
Fix the following failed tests on NV,
hipCGMultiGridGroupType
hipCGMultiGridGroupTypeViaBaseType
hipCGMultiGridGroupTypeViaPublicApi
1. Fix wrong logic in kernel for both AMD and NV.
2. Remove unnecessary hipDeviceSynchronize().
3. In hipCGMultiGridGroupTypeViaBaseType.cpp, change
multi_grid_group as thread_group which is originally expected.
4. hipFree(syncResultD) is fixed as hipHostFree(syncResultD)
5. Optimize some host codes.
Change-Id: I3fe6dac35a7b14bab12adf397b7885df83d28059
[ROCm/hip commit: c57e0f8fe5]