message: videoio(v4l2): fix build due missing V4L2_CID_ISO_SENSITIVITY
diff: @@ -237,6 +237,11 @@ make & enjoy!
  #include <sys/videoio.h>
  #endif
  +// https://github.com/opencv/opencv/issues/13335
  +#ifndef V4L2_CID_ISO_SENSITIVITY
  +#define V4L2_CID_ISO_SENSITIVITY (V4L2_CID_CAMERA_CLASS_BASE+23)
  +#endif
  +
  /* Defaults - If your board can do better, set it here. Set for the most common type inputs. */
  #define DEFAULT_V4L_WIDTH 640
  #define DEFAULT_V4L_HEIGHT 480
  