rename yuv matrix constants to be more clear about what they are

source/row_neon64.cc

 /*
  *  Copyright 2014 The LibYuv 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 421 matching lines @@
     READYUV400
     YUVTORGB(v22, v21, v20)
     "subs       %w2, %w2, #8                   \n"
     "movi       v23.8b, #255                   \n"
     MEMACCESS(1)
     "st4        {v20.8b,v21.8b,v22.8b,v23.8b}, [%1], #32     \n"
     "b.gt       1b                             \n"
     : "+r"(src_y),     // %0
       "+r"(dst_argb),  // %1
       "+r"(width64)    // %2
-    : [kUVToRB]"r"(&kYuvIConstants.kUVToRB),
-      [kUVToG]"r"(&kYuvIConstants.kUVToG),
-      [kUVBiasBGR]"r"(&kYuvIConstants.kUVBiasBGR),
-      [kYToRgb]"r"(&kYuvIConstants.kYToRgb)
+    : [kUVToRB]"r"(&kYuvI601Constants.kUVToRB),
+      [kUVToG]"r"(&kYuvI601Constants.kUVToG),
+      [kUVBiasBGR]"r"(&kYuvI601Constants.kUVBiasBGR),
+      [kYToRgb]"r"(&kYuvI601Constants.kYToRgb)
     : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v20",
       "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30"
   );
 }
 #endif  // HAS_I400TOARGBROW_NEON
 
 #ifdef HAS_J400TOARGBROW_NEON
 void J400ToARGBRow_NEON(const uint8* src_y,
                         uint8* dst_argb,
                         int width) {
@@ skipping 2539 matching lines @@
   : "cc", "memory", "v0", "v1", "v2", "v3"  // Clobber List
   );
 }
 #endif  // HAS_SOBELYROW_NEON
 #endif  // !defined(LIBYUV_DISABLE_NEON) && defined(__aarch64__)
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif