Attempting to fix r205124, which had failed asserts when built with MSVC.

Suggestion from Yaron Keren.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205313 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: teach LLVM that Cortex-A7 is very similar to A8.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205314 91177308-0d34-0410-b5e6-96231b3b80d8