[wasm-simd][liftoff] Handle i64x2.ne

The implementation was added in the various assembler but not actually
handled in liftoff-compiler.

Bug: v8:11348
Change-Id: Ie05bb5e607498a5e5cd283402f9d1eb08ce81661
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2726548Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73165}

src/wasm/baseline/liftoff-compiler.cc

@@ -3068,6 +3068,8 @@ class LiftoffCompiler {
         return EmitBinOp<kS128, kS128>(&LiftoffAssembler::emit_i32x4_ge_u);
       case wasm::kExprI64x2Eq:
         return EmitBinOp<kS128, kS128>(&LiftoffAssembler::emit_i64x2_eq);
+      case wasm::kExprI64x2Ne:
+        return EmitBinOp<kS128, kS128>(&LiftoffAssembler::emit_i64x2_ne);
       case wasm::kExprI64x2LtS:
         return EmitBinOp<kS128, kS128, true>(
             &LiftoffAssembler::emit_i64x2_gt_s);