[clang] [libc] [llvm] [openmp] [libc] Rework the GPU build to be a regular target (PR #81921)

[Michael Jones via cfe-commits]

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@@ -533,15 +542,14 @@ endfunction(add_integration_test)
 set(LIBC_HERMETIC_TEST_COMPILE_OPTIONS ${LIBC_COMPILE_OPTIONS_DEFAULT}
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michaelrj-google wrote:

this section was moved into `LLVMLibcCCompileOptionRules.cmake` in https://github.com/llvm/llvm-project/pull/81917

https://github.com/llvm/llvm-project/pull/81921