compiler-rt/test/profile/Linux/lit.local.cfg: [Py3] Use text mode (universal_newlines=True).

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@288490 91177308-0d34-0410-b5e6-96231b3b80d8

Author: chapuni

test/profile/Linux/lit.local.cfg

@@ -21,6 +21,7 @@ def is_gold_linker_available():
     return False
 
   clang_cmd = subprocess.Popen([config.clang, '-fuse-ld=gold', '-xc', '-'],
+                               universal_newlines = True,
                                stdin = subprocess.PIPE,
                                stdout = subprocess.PIPE,
                                stderr = subprocess.PIPE)