[POWERPC] typo fix and whitespace cleanup on mpc52xx-uart driver

Single typo fix and whitespace changes.  In preparation for heavy
changes to this driver when support for arch/powerpc is added.
Since the driver will be changing significantly anyway, then may
as well take the opportunity to clean it up first.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NSylvain Munaut <tnt@246tNt.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

drivers/serial/mpc52xx_uart.c

 /*
- * drivers/serial/mpc52xx_uart.c
- *
  * Driver for the PSC of the Freescale MPC52xx PSCs configured as UARTs.
  *
  * FIXME According to the usermanual the status bits in the status register
@@ -771,7 +769,7 @@ mpc52xx_uart_suspend(struct platform_device *dev, pm_message_t state)
 {
 	struct uart_port *port = (struct uart_port *) platform_get_drvdata(dev);
 
-	if (sport)
+	if (port)
 		uart_suspend_port(&mpc52xx_uart_driver, port);
 
 	return 0;