Add MSA optimized I422ToARGBRow_MSA and I422ToRGBARow_MSA functions

source/convert_argb.cc

Index: source/convert_argb.cc
diff --git a/source/convert_argb.cc b/source/convert_argb.cc
index da48b185985237716f4d0d188ebdbf57944239d7..6e23cf7437e34d46302739b362c61e7a2f95e9b0 100644
--- a/source/convert_argb.cc
+++ b/source/convert_argb.cc
@@ -102,6 +102,14 @@ static int I420ToARGBMatrix(const uint8* src_y, int src_stride_y,
     I422ToARGBRow = I422ToARGBRow_DSPR2;
   }
 #endif
+#if defined(HAS_I422TOARGBROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToARGBRow = I422ToARGBRow_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      I422ToARGBRow = I422ToARGBRow_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     I422ToARGBRow(src_y, src_u, src_v, dst_argb, yuvconstants, width);
@@ -272,6 +280,14 @@ static int I422ToARGBMatrix(const uint8* src_y, int src_stride_y,
     I422ToARGBRow = I422ToARGBRow_DSPR2;
   }
 #endif
+#if defined(HAS_I422TOARGBROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToARGBRow = I422ToARGBRow_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      I422ToARGBRow = I422ToARGBRow_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     I422ToARGBRow(src_y, src_u, src_v, dst_argb, yuvconstants, width);