8be4b065be
Adding hip-config.cmake variables HIP_CLANG_REPO,
HIP_CLANG_BRANCH, and HIP_CLANG_PATCH_LEVEL. These
are extracted from either hipcc or clang++ --version
output.
Change-Id: I5386b71160d592d95d1867e0b563e91514b1b84b
[ROCm/hip commit: abebb6fe21]