omap-serial :Make the suspend/resume functions depend on CONFIG_PM_SLEEP.

    The macro SET_SYSTEM_SLEEP_PM_OPS  depends CONFIG_PM_SLEEP. The patch
    defines the suspend and resume functions for CONFIG_PM_SLEEP instead of
    CONFIG_SUSPEND.
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/tty/serial/omap-serial.c

@@ -1160,7 +1160,7 @@ static struct uart_driver serial_omap_reg = {
 	.cons		= OMAP_CONSOLE,
 };
 
-#ifdef CONFIG_SUSPEND
+#ifdef CONFIG_PM_SLEEP
 static int serial_omap_suspend(struct device *dev)
 {
 	struct uart_omap_port *up = dev_get_drvdata(dev);