libvpx: Pull from upstream

source/libvpx/vpx_dsp/arm/idct4x4_add_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>
 
-void vp9_idct4x4_16_add_neon(
+void vpx_idct4x4_16_add_neon(
         int16_t *input,
         uint8_t *dest,
         int dest_stride) {
     uint8x8_t d26u8, d27u8;
     uint32x2_t d26u32, d27u32;
     uint16x8_t q8u16, q9u16;
     int16x4_t d16s16, d17s16, d18s16, d19s16, d20s16, d21s16;
     int16x4_t d22s16, d23s16, d24s16, d26s16, d27s16, d28s16, d29s16;
     int16x8_t q8s16, q9s16, q13s16, q14s16;
     int32x4_t q1s32, q13s32, q14s32, q15s32;
@@ skipping 118 matching lines @@
     d = dest;
     vst1_lane_u32((uint32_t *)d, vreinterpret_u32_u8(d26u8), 0);
     d += dest_stride;
     vst1_lane_u32((uint32_t *)d, vreinterpret_u32_u8(d26u8), 1);
     d += dest_stride;
     vst1_lane_u32((uint32_t *)d, vreinterpret_u32_u8(d27u8), 1);
     d += dest_stride;
     vst1_lane_u32((uint32_t *)d, vreinterpret_u32_u8(d27u8), 0);
     return;
 }