HID: logitech-dj: Constify lowlevel HID driver

Since commit 52d22534 ("HID: Make lowlevel driver structs const")
the lowlevel HID drivers are only exposed as const.

Take advantage of this to constify the underlying structure, too.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230130-hid-const-ll-driver-v1-3-3fc282b3b1d0@weissschuh.netSigned-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/hid-logitech-dj.c

@@ -554,7 +554,7 @@ static const u8 hid_reportid_size_map[NUMBER_OF_HID_REPORTS] = {
 
 #define LOGITECH_DJ_INTERFACE_NUMBER 0x02
 
-static struct hid_ll_driver logi_dj_ll_driver;
+static const struct hid_ll_driver logi_dj_ll_driver;
 
 static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev);
 static void delayedwork_callback(struct work_struct *work);
@@ -1506,7 +1506,7 @@ static bool logi_dj_ll_may_wakeup(struct hid_device *hid)
 	return hid_hw_may_wakeup(djrcv_dev->hidpp);
 }
 
-static struct hid_ll_driver logi_dj_ll_driver = {
+static const struct hid_ll_driver logi_dj_ll_driver = {
 	.parse = logi_dj_ll_parse,
 	.start = logi_dj_ll_start,
 	.stop = logi_dj_ll_stop,