arm: NEON optimisations for XOR in gf_multby_one
arm: NEON optimisations for XOR in gf_multby_one

cedricde/gf-complete,ceph/gf-complete,zzxuanyuan/gf-complete,ceph/gf-complete,cedricde/gf-complete,ceph/gf-complete,zzxuanyuan/gf-complete