[clang] [clang-tools-extra] Remove ^^ as a token in OpenCL (PR #108224)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> > Thanks! Making sure I follow along, basically you're saying this patch is good because it keeps the ^^ token reserved, and if/when OpenCL supports C++, it can then use this token for reflection in C++ (if that's chosen by WG21 for the syntax) or use it for its own needs?
> 
> Exactly!
> 
> > One thing to make sure we're both on the same page for -- should the OpenCL spec folks be alerted to the fact that ^^ as a single token conflicts with blocks in C? (That suggests it's perhaps not a good token to use for a binary operator and maybe they want to un-reserve it?)
> 
> It may make sense to report this indeed. An issue can be submitted to this repo: https://github.com/KhronosGroup/OpenCL-Docs.
> 
> CC: @svenvh

Thank you, I filed https://github.com/KhronosGroup/OpenCL-Docs/issues/1264

https://github.com/llvm/llvm-project/pull/108224