libvpx: Pull from upstream

source/libvpx/vp9/common/x86/vp9_sadmxn_x86.c

 /*
  *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
  *
  *  Use 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 <emmintrin.h>  // SSE2
 #include "./vpx_config.h"
 #include "./vp9_rtcd.h"
 #include "vpx/vpx_integer.h"
+#include "vpx_ports/emmintrin_compat.h"
 
 #if HAVE_SSE2
 unsigned int vp9_sad16x3_sse2(
   const unsigned char *src_ptr,
   int  src_stride,
   const unsigned char *ref_ptr,
   int  ref_stride) {
   __m128i s0, s1, s2;
   __m128i r0, r1, r2;
   __m128i sad;
@@ skipping 65 matching lines @@
 
     src_ptr += src_stride*4;
     ref_ptr += ref_stride*4;
   }
 
   sad = _mm_add_epi16(sad,  _mm_srli_si128(sad, 8));
   return _mm_cvtsi128_si32(sad);
 }
 
 #endif