libvpx: Pull from upstream

source/libvpx/vp9/encoder/x86/vp9_variance_avx2.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 "./vpx_config.h"
 
 #include "vp9/encoder/vp9_variance.h"
-#include "vp9/common/vp9_pragmas.h"
 #include "vpx_ports/mem.h"
 
 typedef void (*get_var_avx2) (
   const unsigned char *src_ptr,
   int source_stride,
   const unsigned char *ref_ptr,
   int recon_stride,
   unsigned int *SSE,
   int *Sum
 );
@@ skipping 235 matching lines @@
   // processing 32 element in parallel
   unsigned int sse;
   int se = vp9_sub_pixel_avg_variance32xh_avx2(src, src_stride, x_offset,
                                                  y_offset, dst, dst_stride,
                                                  sec, 32, 32, &sse);
   *sseptr = sse;
   return sse - (((int64_t)se * se) >> 10);
 }