Input: synaptics-rmi4 - use the RMI_F11_REL_BYTES define in rmi_f11_rel_pos_report

The size of relative data in F11 is already defined by RMI_F11_REL_BYTES.
Use the define in rmi_f11_rel_pos_report() to be consistent.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Reviewed-by: Nick Dyer <nick@shmanahar.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/rmi4/rmi_f11.c

@@ -530,8 +530,8 @@ static void rmi_f11_rel_pos_report(struct f11_data *f11, u8 n_finger)
 	struct f11_2d_data *data = &f11->data;
 	s8 x, y;
 
-	x = data->rel_pos[n_finger * 2];
-	y = data->rel_pos[n_finger * 2 + 1];
+	x = data->rel_pos[n_finger * RMI_F11_REL_BYTES];
+	y = data->rel_pos[n_finger * RMI_F11_REL_BYTES + 1];
 
 	rmi_2d_sensor_rel_report(sensor, x, y);
 }