Use CRC and directed rounding intrinsics on A32
Use CRC and directed rounding intrinsics on A32

Enable the use of CRC and directed rounding intrinsics when
targeting ARMv8 32-bit.  These are intrinsics that were added
in ARMv8 for both the 32-bit execution mode and AArch64.

DLTcollab/sse2neon,DLTcollab/sse2neon,DLTcollab/sse2neon