serial: sunsu: constify uart_ops structures

These uart_ops structures are only stored in the ops field of a
uart_port structure and this fields is const, so the uart_ops
structures can also be const.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/sunsu.c

@@ -958,7 +958,7 @@ sunsu_type(struct uart_port *port)
 	return uart_config[type].name;
 }
 
-static struct uart_ops sunsu_pops = {
+static const struct uart_ops sunsu_pops = {
 	.tx_empty	= sunsu_tx_empty,
 	.set_mctrl	= sunsu_set_mctrl,
 	.get_mctrl	= sunsu_get_mctrl,