LLVM IR linking warning due to mismatching Dwarf Version type

[maleadt]

As reported on Slack:

warning: linking module flags 'Dwarf Version': IDs have conflicting values ('i64 4' from  with 'i32 4' from start)

That's the exact inverse of #385. We should figure out a better fix, probably by not bothering setting the DWARF debug level at all (or even stripping it from, e.g., libdevice).

[maleadt]

FWIW, this happened on the following system:

CUDA toolkit 11.7, artifact installation
NVIDIA driver 510.73.5, for CUDA 11.6
CUDA driver 11.6

Libraries: 
- CUBLAS: 11.10.1
- CURAND: 10.2.10
- CUFFT: 10.7.2
- CUSOLVER: 11.3.5
- CUSPARSE: 11.7.3
- CUPTI: 17.0.0
- NVML: 11.0.0+510.73.5
- CUDNN: 8.30.2 (for CUDA 11.5.0)
  Downloaded artifact: CUTENSOR
- CUTENSOR: 1.4.0 (for CUDA 11.5.0)

Toolchain:
- Julia: 1.9.0-beta4
- LLVM: 14.0.6
- PTX ISA support: 3.2, 4.0, 4.1, 4.2, 4.3, 5.0, 6.0, 6.1, 6.3, 6.4, 6.5, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5
- Device capability support: sm_35, sm_37, sm_50, sm_52, sm_53, sm_60, sm_61, sm_62, sm_70, sm_72, sm_75, sm_80, sm_86

[maleadt]

Hopefully fixed by JuliaLang/julia#58508