Mark test experimental-library-flag.cpp as XFAIL on PS4 and PS5 to ge…

…t the bot green until the author can investigate.

Should fix https://lab.llvm.org/buildbot/#/builders/139/builds/25208

Test was originally introduced in D121141.

clang/test/Driver/experimental-library-flag.cpp

@@ -1,6 +1,6 @@
 // On Windows, -stdlib=libc++ is currently ignored, so -lc++experimental is not added.
 // Once -stdlib=libc++ works on Windows, this XFAIL can be removed.
-// XFAIL: windows
+// XFAIL: windows, x86_64-scei-ps4, x86_64-sie-ps5
 
 // RUN: %clangxx -fexperimental-library -stdlib=libc++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-LIBCXX %s
 // RUN: %clangxx -fexperimental-library -stdlib=libstdc++ -### %s 2>&1 | FileCheck --check-prefixes=CHECK,CHECK-LIBSTDCXX %s