[wasm-simd][liftoff] Reorder SIMD opcodes

This reorders the SIMD opcodes together with their implementations
on x64, ia32 according to src/wasm/wasm-opcodes.h.

Bug: v8:9909
Change-Id: Ib2e75927b3b44ebc951005222c8641c256d8872c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2135074Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Zhiguo Zhou <zhiguo.zhou@intel.com>
Cr-Commit-Position: refs/heads/master@{#67051}