[clang] [clang][ARM64EC] Add support for hybrid_patchable attribute. (PR #99478)

[Eli Friedman via cfe-commits]

https://github.com/efriedma-quic approved this pull request.

LGTM

(Please cherry-pick to 19; I'd like to have this in 19.  And maybe https://github.com/cjacek/llvm-project/commit/4febef20ab27ef4440e9dccf3cc65dd6be1f4d7c, if you wouldn't mind opening a pull request for that.)

https://github.com/llvm/llvm-project/pull/99478