Add some missing AArch64 Neon intrinsics like vmull_high_n_s16 and friends.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@196189 91177308-0d34-0410-b5e6-96231b3b80d8
Add some missing AArch64 Neon intrinsics like vuqadd_s64 and friends.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@196191 91177308-0d34-0410-b5e6-96231b3b80d8