[clang] [Clang/AMDGPU] Allow zero sized arrays in HIP device code (PR #195716)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> I tend to agree that we should probably just follow C/C++ compiler support.

Yeah, why I figured we should remove this arbitrary restriction

https://github.com/llvm/llvm-project/pull/195716