serial: cpm_uart: 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: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/cpm_uart/cpm_uart_core.c

@@ -1123,7 +1123,7 @@ static void cpm_put_poll_char(struct uart_port *port,
 }
 #endif /* CONFIG_CONSOLE_POLL */
 
-static struct uart_ops cpm_uart_pops = {
+static const struct uart_ops cpm_uart_pops = {
 	.tx_empty	= cpm_uart_tx_empty,
 	.set_mctrl	= cpm_uart_set_mctrl,
 	.get_mctrl	= cpm_uart_get_mctrl,