Removed linux_code

Change-Id: I7327828d2c9efdf03172d1b90f49d5c51fbba86e
diff --git a/aos/vision/image/V4L2.h b/aos/vision/image/V4L2.h
index 58e5161..d02229a 100644
--- a/aos/vision/image/V4L2.h
+++ b/aos/vision/image/V4L2.h
@@ -1,5 +1,5 @@
-#ifndef AOS_LINUX_CODE_CAMREA_V4L2_H_
-#define AOS_LINUX_CODE_CAMREA_V4L2_H_
+#ifndef AOS_CAMREA_V4L2_H_
+#define AOS_CAMREA_V4L2_H_
 
 // This file handles including everything needed to use V4L2 and has some
 // utility functions.