libvpx: Pull from upstream

source/libvpx/vpx_scale/arm/neon/vp8_vpxyv12_copy_y_neon.asm

 ;
 ;  Copyright (c) 2010 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.
 ;
 
 
-    EXPORT  |vp8_yv12_copy_y_neon|
+    EXPORT  |vpx_yv12_copy_y_neon|
 
     ARM
     REQUIRE8
     PRESERVE8
 
     INCLUDE vpx_scale_asm_offsets.asm
 
     AREA ||.text||, CODE, READONLY, ALIGN=2
 
-;void vpxyv12_copy_y_neon(YV12_BUFFER_CONFIG *src_ybc, YV12_BUFFER_CONFIG *dst_ybc)
-|vp8_yv12_copy_y_neon| PROC
+;void vpx_yv12_copy_y_neon(const YV12_BUFFER_CONFIG *src_ybc,
+;                          YV12_BUFFER_CONFIG *dst_ybc)
+|vpx_yv12_copy_y_neon| PROC
     push            {r4 - r11, lr}
     vpush           {d8-d15}
 
     ldr             r4, [r0, #yv12_buffer_config_y_height]
     ldr             r5, [r0, #yv12_buffer_config_y_width]
     ldr             r6, [r0, #yv12_buffer_config_y_stride]
     ldr             r7, [r1, #yv12_buffer_config_y_stride]
     ldr             r2, [r0, #yv12_buffer_config_y_buffer]       ;srcptr1
     ldr             r3, [r1, #yv12_buffer_config_y_buffer]       ;dstptr1
 
@@ skipping 79 matching lines @@
     add             r2, r2, r6, lsl #1
     add             r3, r3, r7, lsl #1
 
     bne             extra_cp_src_to_dst_height_loop1
 
     b               end_of_cp_src_to_dst1
 
     ENDP
 
     END