libvpx: Pull from upstream

source/libvpx/vp9/encoder/vp9_encodemv.h

 /*
  *  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.
  */
 
 
 #ifndef VP9_ENCODER_VP9_ENCODEMV_H_
 #define VP9_ENCODER_VP9_ENCODEMV_H_
 
 #include "vp9/encoder/vp9_onyx_int.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 void vp9_entropy_mv_init();
 
-void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vp9_writer* const);
+void vp9_write_nmv_probs(VP9_COMMON *cm, int usehp, vp9_writer *w);
 
 void vp9_encode_mv(VP9_COMP *cpi, vp9_writer* w, const MV* mv, const MV* ref,
                    const nmv_context* mvctx, int usehp);
 
 void vp9_build_nmv_cost_table(int *mvjoint,
                               int *mvcost[2],
                               const nmv_context* const mvctx,
                               int usehp,
                               int mvc_flag_v,
                               int mvc_flag_h);
 
 void vp9_update_mv_count(VP9_COMP *cpi, MACROBLOCK *x, int_mv best_ref_mv[2]);
 
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_ENCODER_VP9_ENCODEMV_H_