[test] Relax test/Other/opt-hot-cold-split.ll

On some ARM bots, 'Target Pass Configuration' does not run after 'Target
Transform Info'. Relax this pipeline test to allow that.

This is the same fix as in r328167.

Bot URL: http://lab.llvm.org:8011/builders/clang-cmake-armv7-quick/builds/4611

llvm-svn: 344919