[clang] [llvm] [OpenMP] Remove 'libomptarget.devicertl.a' fatbinary and use static library (PR #126143)

[Saiyedul Islam via cfe-commits]

saiislam wrote:

> > We already have a host-side `libomptarget`:
> > https://github.com/llvm/llvm-project/blob/cfd8980fe79872feb9ed81959aa018681c7b3354/offload/src/CMakeLists.txt#L9
> 
> We can have conflicting names since they're in separate install directories. I'd like this to have a more 'standard' name if possible, and I feel putting a `gpu` or something on it is redundant since it's already in the GPU's library dir. To me, the main concern with using `libomp` was that people might think that it provides the same `libomp` that the CPU uses.

Should it be named as `liboffload` or `liboffload.devicertl`?

https://github.com/llvm/llvm-project/pull/126143