port a7b9e588 https://crrev.com/c/1900661

Original Commit Message:

  [wasm-simd] Implement i64x2 neg for arm

Change-Id: Ia4f52b26e4c3d6e2833b01246bd917d5e62ca79d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1924003Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Auto-Submit: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#65103}