[PATCH] More pmac-zilog sleep fix

In the long story of "BenH can't get a simple fix right the first time",
please add this one to pmac_zilog, and now people should enjoy really
working sleep again on pmac laptops ...

If the serial port was closed, we could use an uninitialized "pwr_delay"
and pass that to schedule_timeout().

drivers/serial/pmac_zilog.c

@@ -1626,7 +1626,7 @@ static int pmz_resume(struct macio_dev *mdev)
 	struct uart_pmac_port *uap = dev_get_drvdata(&mdev->ofdev.dev);
 	struct uart_state *state;
 	unsigned long flags;
-	int pwr_delay;
+	int pwr_delay = 0;
 
 	if (uap == NULL)
 		return 0;