port aafbc138 https://crrev.com/c/1900662

Original Commit Message:

  [wasm-simd] Implement i64x2 shifts for arm

Change-Id: I036610bdcf8e36879cf7a47fbf6e28034345a945
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1928499
Auto-Submit: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65126}