libvpx: Pull from upstream

source/libvpx/vpx_dsp/mips/loopfilter_masks_dspr2.h

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 337 matching lines @@
       "subu_s.qb      %[r_k],     %[q0],          %[q3]        \n\t"
       "or             %[r_k],     %[r_k],         %[c]         \n\t"
       "cmpgu.lt.qb    %[c],       %[flat_thresh], %[r_k]       \n\t"
       "or             %[r_flat],  %[r_flat],      %[c]         \n\t"
       "sll            %[r_flat],  %[r_flat],      24           \n\t"
       "wrdsp          %[r_flat]                                \n\t"
       "pick.qb        %[flat1],   $0,             %[ones]      \n\t"
       /* flat & flatmask4(thresh, p3, p2, p1, p0, q0, q1, q2, q3) */
       "and            %[flat1],  %[flat3],        %[flat1]     \n\t"
 
-      : [c] "=&r" (c), [r_k] "=&r" (r_k), [r] "=&r" (r), 
+      : [c] "=&r" (c), [r_k] "=&r" (r_k), [r] "=&r" (r),
         [r_flat] "=&r" (r_flat), [flat1] "=&r" (flat1), [flat3] "=&r" (flat3)
       : [p4] "r" (p4), [p3] "r" (p3), [p2] "r" (p2),
         [p1] "r" (p1), [p0] "r" (p0), [q0] "r" (q0), [q1] "r" (q1),
         [q2] "r" (q2), [q3] "r" (q3), [q4] "r" (q4),
         [flat_thresh] "r" (flat_thresh), [ones] "r" (ones)
   );
 
   *flat2 = flat1;
 }
 #endif  // #if HAVE_DSPR2
 #ifdef __cplusplus
 }  // extern "C"
 #endif
 
 #endif  // VP9_COMMON_MIPS_DSPR2_VP9_LOOPFILTER_MASKS_DSPR2_H_