libvpx: Pull from upstream

source/libvpx/vpx_ports/asm_offsets.h

-/*
- *  Copyright (c) 2011 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.
- */
-
-
-#ifndef VPX_PORTS_ASM_OFFSETS_H_
-#define VPX_PORTS_ASM_OFFSETS_H_
-
-#include <stddef.h>
-
-#define ct_assert(name,cond) \
-  static void assert_##name(void) UNUSED;\
-  static void assert_##name(void) {switch(0){case 0:case !!(cond):;}}
-
-#if INLINE_ASM
-#define DEFINE(sym, val) asm("\n" #sym " EQU %0" : : "i" (val))
-#define BEGIN int main(void) {
-#define END return 0; }
-#else
-#define DEFINE(sym, val) const int sym = val
-#define BEGIN
-#define END
-#endif
-
-#endif  // VPX_PORTS_ASM_OFFSETS_H_