watchdog: omap_wdt.c: Fix the mismatch of pm_runtime enable and disable

Currently the watchdog driver calls the pm_runtime_enable and never
the disable. This may cause a warning when pm_runtime_enable
checks for the count match.

Also fixes the error

/build/watchdog # insmod omap_wdt.ko
[   44.999389] omap_wdt omap_wdt: Unbalanced pm_runtime_enable!
[   45.011047] OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
/build/watchdog #

Attempting to fix the same by calling pm_runtime_disable.
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/omap_wdt.c

@@ -339,6 +339,7 @@ static int __devinit omap_wdt_probe(struct platform_device *pdev)
 	return 0;
 
 err_misc:
+	pm_runtime_disable(wdev->dev);
 	platform_set_drvdata(pdev, NULL);
 	iounmap(wdev->base);
 
@@ -371,6 +372,7 @@ static int __devexit omap_wdt_remove(struct platform_device *pdev)
 	struct omap_wdt_dev *wdev = platform_get_drvdata(pdev);
 	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
+	pm_runtime_disable(wdev->dev);
 	if (!res)
 		return -ENOENT;