[asan] Tweak gen_dynamic_list.py to work with both Py2 and Py3.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@249051 91177308-0d34-0410-b5e6-96231b3b80d8

lib/sanitizer_common/scripts/gen_dynamic_list.py

@@ -100,7 +100,7 @@ def main(argv):
     print('global:')
   result.sort()
   for f in result:
-    print('  ' + f.encode('utf-8') + ';')
+    print(u'  %s;' % f)
   if args.version_list:
     print('local:')
     print('  *;')