libvpx: Pull from upstream

source/libvpx/vp8/common/arm/neon/sixtappredict_neon.c

 /*
  *  Copyright (c) 2014 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 <arm_neon.h>
-
-#ifdef _MSC_VER
-#define __builtin_prefetch(x)
-#endif
+#include "vpx_ports/mem.h"
 
 static const int8_t vp8_sub_pel_filters[8][8] = {
     {0,  0,  128,   0,   0, 0, 0, 0},  /* note that 1/8 pel positionyys are */
     {0, -6,  123,  12,  -1, 0, 0, 0},  /*    just as per alpha -0.5 bicubic */
     {2, -11, 108,  36,  -8, 1, 0, 0},  /* New 1/4 pel 6 tap filter */
     {0, -9,   93,  50,  -6, 0, 0, 0},
     {3, -16,  77,  77, -16, 3, 0, 0},  /* New 1/2 pel 6 tap filter */
     {0, -6,   50,  93,  -9, 0, 0, 0},
     {1, -8,   36, 108, -11, 2, 0, 0},  /* New 1/4 pel 6 tap filter */
     {0, -1,   12, 123,  -6, 0, 0, 0},
@@ skipping 1722 matching lines @@
             vst1_u8(dst, d7u8);
             dst += dst_pitch;
             vst1_u8(dst, d8u8);
             dst += dst_pitch;
             vst1_u8(dst, d9u8);
             dst += dst_pitch;
         }
     }
     return;
 }