Staging: android: fix build error on 64bit boxes

ktime_t isn't ment to directly access on all arches, so use the proper
conversion functions instead to figure out what time is remaining.
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Mike Lockwood <lockwood@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/android/timed_gpio.c

@@ -49,7 +49,8 @@ static ssize_t gpio_enable_show(struct device *dev, struct device_attribute *att
 
 	if (hrtimer_active(&gpio_data->timer)) {
 		ktime_t r = hrtimer_get_remaining(&gpio_data->timer);
-		remaining = r.tv.sec * 1000 + r.tv.nsec / 1000000;
+		struct timeval t = ktime_to_timeval(r);
+		remaining = t.tv_sec * 1000 + t.tv_usec;
 	} else
 		remaining = 0;