Fix a call to a parent class method in InputOverlay.

Should have been a call to draw, not onDraw. Behavior-wise, it's still the
same however.

Source/Android/src/org/dolphinemu/dolphinemu/emulation/overlay/InputOverlay.java

@@ -94,7 +94,7 @@ public final class InputOverlay extends SurfaceView implements OnTouchListener
 	@Override
 	public void draw(Canvas canvas)
 	{
-		super.onDraw(canvas);
+		super.draw(canvas);
 
 		for (InputOverlayDrawableButton button : overlayButtons)
 		{