Pass mirrored to gles2_debayer to make mirrored actually work

src/process_pipeline.c

@@ -1253,7 +1253,7 @@ on_output_changed(bool format_changed)
                                 state_proc.mode->width,
                                 state_proc.mode->height,
                                 state_proc.mode->rotation,
-                                0,
+                                state_proc.mode->mirrored,
                                 state_proc.calibration);
 }