Attempt to address cmake buildbot failure

CMake gets confused by the fact that both LLVM and Clang now have
a CodeGen unittest. Rename the target to avoid that. The new test
was also missing ProfileData (thanks to Julien Lerouge for
pointing that out)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@216499 91177308-0d34-0410-b5e6-96231b3b80d8