[clang] [llvm] [clang-linker-wrapper] Add ELF packaging for spirv64-intel OpenMP images (PR #125737)

[via llvm-commits]

dyung wrote:

Hi @sarnex, the test you added seems to be failing on a buildbot, can you take a look?

https://lab.llvm.org/buildbot/#/builders/144/builds/17530
```
******************** TEST 'Clang :: Tooling/clang-linker-wrapper-spirv-elf.cpp' FAILED ********************
Exit Code: 1
Command Output (stderr):
--
RUN: at line 4: mkdir -p /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
+ mkdir -p /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
RUN: at line 5: cd /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
+ cd /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_tmp
RUN: at line 6: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang --driver-mode=g++ -fopenmp -fopenmp-targets=spirv64-intel -nogpulib -c -o /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_clang-linker-wrapper-spirv-elf.o /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/Tooling/clang-linker-wrapper-spirv-elf.cpp
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang --driver-mode=g++ -fopenmp -fopenmp-targets=spirv64-intel -nogpulib -c -o /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/test/Tooling/Output/clang-linker-wrapper-spirv-elf.cpp.tmp_clang-linker-wrapper-spirv-elf.o /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/Tooling/clang-linker-wrapper-spirv-elf.cpp
clang: error: unable to execute command: Executable "llvm-spirv" doesn't exist!
clang: error: llvm-spirv command failed with exit code 1 (use -v to see invocation)
--
********************
```

https://github.com/llvm/llvm-project/pull/125737