[compiler-rt] [compiler-rt][pgo] Add profile instrumentation test for coroutines (PR #213801)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-gcc-ubuntu-no-asserts` running on `doug-worker-6` while building `compiler-rt` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/202/builds/1426

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'Profile-x86_64 :: instrprof-coroutine-profile.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
/home/buildbot/buildbot-root/gcc-no-asserts/build/./bin/clang  --driver-mode=g++  -m64  -ldl  -fprofile-generate -std=c++20 -O2 -o /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins/compiler-rt/test/profile/Profile-x86_64/Output/instrprof-coroutine-profile.cpp.tmp /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/test/profile/instrprof-coroutine-profile.cpp
# executed command: /home/buildbot/buildbot-root/gcc-no-asserts/build/./bin/clang --driver-mode=g++ -m64 -ldl -fprofile-generate -std=c++20 -O2 -o /home/buildbot/buildbot-root/gcc-no-asserts/build/runtimes/runtimes-bins/compiler-rt/test/profile/Profile-x86_64/Output/instrprof-coroutine-profile.cpp.tmp /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/test/profile/instrprof-coroutine-profile.cpp
# .---command stderr------------
# | /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/compiler-rt/test/profile/instrprof-coroutine-profile.cpp:5:10: fatal error: 'coroutine' file not found
# |     5 | #include <coroutine>
# |       |          ^~~~~~~~~~~
# | 1 error generated.
# `-----------------------------
# error: command failed with exit status: 1

--

********************


```

</details>

https://github.com/llvm/llvm-project/pull/213801