libvpx: Pull from upstream

source/libvpx/third_party/libyuv/source/scale_neon.cc

 /*
  *  Copyright 2011 The LibYuv 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 "libyuv/row.h"
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
 // This module is for GCC Neon.
-#if !defined(LIBYUV_DISABLE_NEON) && defined(__ARM_NEON__)
+#if !defined(LIBYUV_DISABLE_NEON) && defined(__ARM_NEON__) && \
+    !defined(__aarch64__)
 
 // NEON downscalers with interpolation.
 // Provided by Fritz Koenig
 
 // Read 32x1 throw away even pixels, and write 16x1.
 void ScaleRowDown2_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
                         uint8* dst, int dst_width) {
   asm volatile (
     ".p2align   2                              \n"
   "1:                                          \n"
@@ skipping 719 matching lines @@
     "bgt        1b                             \n"
   : "+r"(src_argb),    // %0
     "+r"(src_stride),  // %1
     "+r"(dst_argb),    // %2
     "+r"(dst_width)    // %3
   : "r"(src_stepx)     // %4
   : "memory", "cc", "r12", "q0", "q1", "q2", "q3"
   );
 }
 
-#endif  // __ARM_NEON__
+#endif  // defined(__ARM_NEON__) && !defined(__aarch64__)
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif