[libclc] [libclc][NFC] Change include style from <...> to "..." (PR #186537)

[Romaric Jodin via cfe-commits]

https://github.com/rjodinchr commented:

LGTM. I've tried the patch and did not see any regression as far as clspv is concerned.

https://github.com/llvm/llvm-project/pull/186537