fix for yuv to rgb on arm64.

include/libyuv/row.h

Index: include/libyuv/row.h
diff --git a/include/libyuv/row.h b/include/libyuv/row.h
index 43a2de1b89089dbfad4065a87e9be9df24870102..0754c44f48049c034a5ec4070c5f3f617ae66b09 100644
--- a/include/libyuv/row.h
+++ b/include/libyuv/row.h
@@ -417,18 +417,25 @@ typedef uint32 ulvec32[8];
 typedef uint8 ulvec8[32];
 #endif
 
-#if defined(__arm__) || defined(__aarch64__)
-
-// This struct is for Arm color conversion.
+#if defined(__aarch64__)
+// This struct is for Arm64 color conversion.
+struct YuvConstants {
+  uvec16 kUVToRB;
+  uvec16 kUVToRB2;
+  uvec16 kUVToG;
+  uvec16 kUVToG2;
+  vec16 kUVBiasBGR;
+  vec32 kYToRgb;
+};
+#elif defined(__arm__)
+// This struct is for ArmV7 color conversion.
 struct YuvConstants {
   uvec8 kUVToRB;
   uvec8 kUVToG;
   vec16 kUVBiasBGR;
   vec32 kYToRgb;
 };
-
 #else
-
 // This struct is for Intel color conversion.
 struct YuvConstants {
   lvec8 kUVToB;