tty: serial: xilinx_uartps: Use Macro for ttyPS0

All instances of "ttyPS" use this macro except for this one. Convert
it.
Signed-off-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: NMichal Simek <michal.simek@xilinx.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/xilinx_uartps.c

@@ -1154,7 +1154,8 @@ static int __init cdns_uart_console_setup(struct console *co, char *options)
 		return -EINVAL;
 
 	if (!port->mapbase) {
-		pr_debug("console on ttyPS%i not present\n", co->index);
+		pr_debug("console on " CDNS_UART_TTY_NAME "%i not present\n",
+			 co->index);
 		return -ENODEV;
 	}