Rename YV12 to I420.

Change-Id: I453b7044bf46950ef67091f3417ed3e6a65086a0
diff --git a/libvideoeditor/lvpp/NativeWindowRenderer.h b/libvideoeditor/lvpp/NativeWindowRenderer.h
index 2af19a3..cafd6fb 100755
--- a/libvideoeditor/lvpp/NativeWindowRenderer.h
+++ b/libvideoeditor/lvpp/NativeWindowRenderer.h
@@ -76,7 +76,7 @@
     void queueInternalBuffer(ANativeWindow* anw, MediaBuffer* buffer);
     void queueExternalBuffer(ANativeWindow* anw, MediaBuffer* buffer,
             int width, int height);
-    void copyYV12Buffer(MediaBuffer* src, uint8_t* dst,
+    void copyI420Buffer(MediaBuffer* src, uint8_t* dst,
             int srcWidth, int srcHeight, int stride);
     void updateProgramAndHandle(uint32_t videoEffect);
     void calculatePositionCoordinates(M4xVSS_MediaRendering renderingMode,