Re-enabling MCJIT tests on ARM

After several refactorings on the MCJIT remote communication, things are
finally looking good on Clang-compiled LLVM regarding MCJIT remote tests,
so I'm re-enabling them to see how the self-hosting buildbot behaves over
a longer period.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200102 91177308-0d34-0410-b5e6-96231b3b80d8

test/ExecutionEngine/MCJIT/remote/lit.local.cfg

@@ -4,5 +4,5 @@ if 'armv4' in config.root.target_triple or \
 
 # This is temporary, until Remote MCJIT works on ARM
 # See http://llvm.org/bugs/show_bug.cgi?id=18057
-if 'armv7' in config.root.target_triple:
-    config.unsupported = True
+#if 'armv7' in config.root.target_triple:
+#    config.unsupported = True