Libyuv MIPS DSPR2 optimizations.

include/libyuv/scale_row.h

Index: include/libyuv/scale_row.h
diff --git a/include/libyuv/scale_row.h b/include/libyuv/scale_row.h
index 24471920ef01cb4d06264ec791f29ecc70fe6928..b3132577e62d7a42f8517a71c92bd8cdd84e4a45 100644
--- a/include/libyuv/scale_row.h
+++ b/include/libyuv/scale_row.h
@@ -101,6 +101,7 @@ extern "C" {
 #define HAS_SCALEROWDOWN4_DSPR2
 #define HAS_SCALEROWDOWN34_DSPR2
 #define HAS_SCALEROWDOWN38_DSPR2
+#define HAS_SCALEADDROW_DSPR2
 #endif
 
 #if !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)
@@ -842,6 +843,9 @@ void ScaleRowDown38_3_Box_DSPR2(const uint8* src_ptr,
                                 ptrdiff_t src_stride,
                                 uint8* dst_ptr,
                                 int dst_width);
+void ScaleAddRow_DSPR2(const uint8* src_ptr, uint16* dst_ptr, int src_width);
+void ScaleAddRow_Any_DSPR2(const uint8* src_ptr, uint16* dst_ptr,
+                           int src_width);
 
 #ifdef __cplusplus
 }  // extern "C"