[ARM] ACLE Chapter 9 intrinsics

Implemented the remaining integer data processing intrinsics from
the ARM ACLE v2.1 spec, such as parallel arithemtic and DSP style
multiplications.

Differential Revision: https://reviews.llvm.org/D32282


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@302131 91177308-0d34-0410-b5e6-96231b3b80d8