[builtins] Build x86_64 with GENERIC_TF_SOURCES

Change-Id: I59213ad8ee3c88ec55c821e0160310dd624cae54
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@358706 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed