libvpx: Pull from upstream

source/libvpx/vp9/common/mips/msa/vp9_idct16x16_msa.c

 /*
  *  Copyright (c) 2015 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 <assert.h>
 #include "vp9/common/mips/msa/vp9_idct_msa.h"
 
 void vp9_idct16_1d_rows_msa(const int16_t *input, int16_t *output) {
   v8i16 loc0, loc1, loc2, loc3;
   v8i16 reg0, reg2, reg4, reg6, reg8, reg10, reg12, reg14;
   v8i16 reg3, reg13, reg11, reg5, reg7, reg9, reg1, reg15;
   v8i16 tmp5, tmp6, tmp7;
 
   LD_SH8(input, 16, reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7);
   input += 8;
@@ skipping 524 matching lines @@
       for (i = 0; i < 2; ++i) {
         vp9_iadst16_1d_columns_addblk_msa((out_ptr + (i << 3)),
                                           (dst + (i << 3)), dst_stride);
       }
       break;
     default:
       assert(0);
       break;
   }
 }