[llvm] [JITLink][i386] Avoid 'i386' name clashing with built-in macro (PR #137063)

[Lang Hames via llvm-commits]

lhames wrote:

This should be fixed by https://github.com/llvm/llvm-project/commit/b972164f38133fbc878275f4ae324908ae14d750 and prior commits.

https://github.com/llvm/llvm-project/pull/137063