[Bug c/109707] Skip __attribute__((naked)) functions for -pg and -finstrument-functions

[i at maskray dot me]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109707

--- Comment #1 from Fangrui Song <i at maskray dot me> ---
I came here from a PR for Clang:
https://github.com/llvm/llvm-project/issues/62504