Add module map entry for ARM ACLE header file


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@213731 91177308-0d34-0410-b5e6-96231b3b80d8
ARM: Add doc for ACLE memory barrier intrinsics

Add documentations for ACLE memory barrier intrinsics, describing their motion
barrier characteristics.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@213733 91177308-0d34-0410-b5e6-96231b3b80d8
[Driver][Mips] Restore FIXME comment was removed accidentally.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@213734 91177308-0d34-0410-b5e6-96231b3b80d8