camera: include: Don't override possible overlayed header

 * If targets define a specific header path, then let it be the case
   and don't override it to avoid mismatched headers in the modules.

 * This only became an issue since O due to moved camera headers (commit e2b4384).

Change-Id: I6bf7d1da7448d71f7821d40501db971f837781db

camera/include/camera/CameraParameters2.h

@@ -19,7 +19,7 @@
 
 #include <utils/Vector.h>
 #include <utils/String8.h>
-#include "CameraParameters.h"
+#include <camera/CameraParameters.h>
 
 namespace android {