Add MSA optimized I422ToYUY2Row, I422ToUYVYRow functions

source/convert_from_argb.cc

Index: source/convert_from_argb.cc
diff --git a/source/convert_from_argb.cc b/source/convert_from_argb.cc
index 2a8682b7eb42f17642d27ea5ff1cfd7759d4ddae..50ede22a686e056df90f82979207c8674a2970d8 100644
--- a/source/convert_from_argb.cc
+++ b/source/convert_from_argb.cc
@@ -553,6 +553,14 @@ int ARGBToYUY2(const uint8* src_argb, int src_stride_argb,
     }
   }
 #endif
+#if defined(HAS_I422TOYUY2ROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToYUY2Row = I422ToYUY2Row_Any_MSA;
+    if (IS_ALIGNED(width, 32)) {
+      I422ToYUY2Row = I422ToYUY2Row_MSA;
+    }
+  }
+#endif
 
   {
     // Allocate a rows of yuv.
@@ -655,6 +663,14 @@ int ARGBToUYVY(const uint8* src_argb, int src_stride_argb,
     }
   }
 #endif
+#if defined(HAS_I422TOUYVYROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToUYVYRow = I422ToUYVYRow_Any_MSA;
+    if (IS_ALIGNED(width, 32)) {
+      I422ToUYVYRow = I422ToUYVYRow_MSA;
+    }
+  }
+#endif
 
   {
     // Allocate a rows of yuv.