HID: switch to using input_dev->dev.parent

In preparation for struct class_device -> struct device input
core conversion switch to using input_dev->dev.parent when
specifying device position in sysfs tree.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/usbhid/hid-lgff.c b/drivers/hid/usbhid/hid-lgff.c
index 92d2553..c5cd410 100644
--- a/drivers/hid/usbhid/hid-lgff.c
+++ b/drivers/hid/usbhid/hid-lgff.c
@@ -60,7 +60,7 @@
 
 static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
 {
-	struct hid_device *hid = dev->private;
+	struct hid_device *hid = input_get_drvdata(dev);
 	struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
 	struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
 	int x, y;