[wasm-simd][x64] Add missing CpuFeatureScope to some instructions

It doesn't seem to be a problem at all, I think we already have SSE4_1
scope enabled somewhere.

Change-Id: I501166a4e45214832e85df8a2594dabe6976bfd3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567191Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71584}

src/codegen/x64/macro-assembler-x64.cc

@@ -1906,6 +1906,7 @@ void TurboAssembler::Pblendvb(XMMRegister dst, XMMRegister src1,
     CpuFeatureScope avx_scope(this, AVX);
     vpblendvb(dst, src1, src2, mask);
   } else {
+    CpuFeatureScope scope(this, SSE4_1);
     DCHECK_EQ(dst, src1);
     DCHECK_EQ(xmm0, mask);
     pblendvb(dst, src2);
@@ -1918,6 +1919,7 @@ void TurboAssembler::Blendvps(XMMRegister dst, XMMRegister src1,
     CpuFeatureScope avx_scope(this, AVX);
     vblendvps(dst, src1, src2, mask);
   } else {
+    CpuFeatureScope scope(this, SSE4_1);
     DCHECK_EQ(dst, src1);
     DCHECK_EQ(xmm0, mask);
     blendvps(dst, src2);
@@ -1930,6 +1932,7 @@ void TurboAssembler::Blendvpd(XMMRegister dst, XMMRegister src1,
     CpuFeatureScope avx_scope(this, AVX);
     vblendvpd(dst, src1, src2, mask);
   } else {
+    CpuFeatureScope scope(this, SSE4_1);
     DCHECK_EQ(dst, src1);
     DCHECK_EQ(xmm0, mask);
     blendvpd(dst, src2);