Add support for shuffle vector intrinsic via Neon in ARM
Add support for shuffle vector intrinsic via Neon in ARM

This adds byte_swap (variant of shuffle) and shuffle vector intrinsic
for ARM based on Neon, concuring with same signature as SSE vector
intrinsic.

Change-Id: I386fd2b1dcc83654e4ad9f90a6065d7736e4ce5c
Signed-off-by: Sirshak Das <380db8dd6c2f8c5c272b1de3ca80f9519fdb7fdc@arm.com>

vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp