[clang] [SYCL] AST support for SYCL kernel entry point functions. (PR #122379)

[Tom Honermann via cfe-commits]

tahonermann wrote:

@erichkeane, thank you for the prior code review. I believe I've addressed all the concerns you raised. There are two conversations I left unresolved pending any further response from you.

https://github.com/llvm/llvm-project/pull/122379