The lane indices of S8x16Shuffle will be printed as null-terminated
character array in Operator1's PrintParameter implementation.This patch
add S8x16ShuffleParameter class, override operater<<, print indices as
integer array.

before fix:
Shuffle[\b\t\n^K\f\r^N^O]

after fix:
Shuffle[8,9,10,11,12,13,14,15,0,0,0,0,0,0,0,0]

Change-Id: I421e639f5229d3a5e348868be33f2d8bbfcfd2d6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1922735
Commit-Queue: Jie Pan <jie.pan@intel.com>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Auto-Submit: Jie Pan <jie.pan@intel.com>
Cr-Commit-Position: refs/heads/master@{#65253}