libvpx: Pull from upstream

source/libvpx/vp8/common/arm/neon/copymem8x4_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_copy_mem8x4_neon|
-    ; ARM
-    ; REQUIRE8
-    ; PRESERVE8
-
-    AREA    Block, CODE, READONLY ; name this block of code
-;void copy_mem8x4_neon( unsigned char *src, int src_stride, unsigned char *dst, int dst_stride)
-;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-|vp8_copy_mem8x4_neon| PROC
-    vld1.u8     {d0}, [r0], r1
-    vld1.u8     {d1}, [r0], r1
-    vst1.u8     {d0}, [r2], r3
-    vld1.u8     {d2}, [r0], r1
-    vst1.u8     {d1}, [r2], r3
-    vld1.u8     {d3}, [r0], r1
-    vst1.u8     {d2}, [r2], r3
-    vst1.u8     {d3}, [r2], r3
-
-    mov     pc, lr
-
-    ENDP  ; |vp8_copy_mem8x4_neon|
-
-    END