multiple-kernel-linking.cpp in intel/llvm-test-suite fails on Windows

[steffenlarsen]

Describe the bug
KernelAndProgram/multiple-kernel-linking.cpp has been seen failing in intel/llvm verification passes. See for example #7391 and #7077.

Ouput:

$ "env" "ONEAPI_DEVICE_SELECTOR=opencl:cpu" "...\build\SYCL\KernelAndProgram\Output\multiple-kernel-linking.cpp.tmp_per_kernel.out"
note: command had no output on stdout or stderr
$ "FileCheck" "...\llvm-test-suite\SYCL\KernelAndProgram\multiple-kernel-linking.cpp"
# command stderr:
FileCheck error: '<stdin>' is empty.
FileCheck command line:  filecheck.exe ...\llvm-test-suite\SYCL\KernelAndProgram\multiple-kernel-linking.cpp

error: command failed with exit status: 2

Environment (please complete the following information):

• OS: Windows
• Backend: OpenCL

[KseniyaTikhomirova]

fixed by #7801