[llvm] [llvm-c] Add LLVMDWARFTypeEncoding enum and update the MacInfo and callconv enum (PR #84456)

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edg-l wrote:

> > I added some entries, its not just reformatting.
> 
> Okay I see that now. But reformatting should still go first separately.

If NFC patch means a commit then i put it in its own commit, i think it should be ok now.

https://github.com/llvm/llvm-project/pull/84456