libvpx: Pull from upstream

source/libvpx/vp9/encoder/x86/vp9_error_intrin_avx2.c

 /*
  *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
  *
  *  Usee of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <immintrin.h>  // AVX2
+
+#include "./vp9_rtcd.h"
 #include "vpx/vpx_integer.h"
 
-
 int64_t vp9_block_error_avx2(const int16_t *coeff,
                              const int16_t *dqcoeff,
                              intptr_t block_size,
                              int64_t *ssz) {
   __m256i sse_reg, ssz_reg, coeff_reg, dqcoeff_reg;
   __m256i exp_dqcoeff_lo, exp_dqcoeff_hi, exp_coeff_lo, exp_coeff_hi;
   __m256i sse_reg_64hi, ssz_reg_64hi;
   __m128i sse_reg128, ssz_reg128;
   int64_t sse;
   int i;
@@ skipping 38 matching lines @@
 
   ssz_reg128 = _mm_add_epi64(_mm256_castsi256_si128(ssz_reg),
                              _mm256_extractf128_si256(ssz_reg, 1));
 
   // store the results
   _mm_storel_epi64((__m128i*)(&sse), sse_reg128);
 
   _mm_storel_epi64((__m128i*)(ssz), ssz_reg128);
   return sse;
 }