HID: move to_hid_device() to hid.h

to_hid_device() macro is defined in both hid-lg4ff.c and
hid-logitech-hidpp.c. So I move it to include/linux/hid.h.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-lg4ff.c

@@ -33,8 +33,6 @@
 #include "hid-lg4ff.h"
 #include "hid-ids.h"
 
-#define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
-
 #define LG4FF_MMODE_IS_MULTIMODE 0
 #define LG4FF_MMODE_SWITCHED 1
 #define LG4FF_MMODE_NOT_MULTIMODE 2

drivers/hid/hid-logitech-hidpp.c

@@ -1310,8 +1310,6 @@ struct g920_private_data {
 	u16 range;
 };
 
-#define to_hid_device(pdev) container_of(pdev, struct hid_device, dev)
-
 static ssize_t g920_range_show(struct device *dev, struct device_attribute *attr,
 				char *buf)
 {

include/linux/hid.h

@@ -565,6 +565,9 @@ struct hid_device {							/* device report descriptor */
 	wait_queue_head_t debug_wait;
 };
 
+#define to_hid_device(pdev) \
+	container_of(pdev, struct hid_device, dev)
+
 static inline void *hid_get_drvdata(struct hid_device *hdev)
 {
 	return dev_get_drvdata(&hdev->dev);