Fix Neon detection for Cortex-A class, plus adds some more CPUs to default features

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190702 91177308-0d34-0410-b5e6-96231b3b80d8
Add more Cortex CPUs and tests

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190703 91177308-0d34-0410-b5e6-96231b3b80d8
Moving Cortex-R cores to armv7r arch

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190704 91177308-0d34-0410-b5e6-96231b3b80d8