Tweak llvm/test/tools/gold/X86/parallel.ll to run with pthread-unaware ld.gold on Linux.

If ld.gold is configured without --enable-thread, ld.gold might not load libpthread.so.
Preloading LLVMgold.so loads also libpthread.so.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246739 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed