platform/x86: asus-tf103c-dock: 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-v1-7-3fc282b3b1d0@weissschuh.netSigned-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/platform/x86/asus-tf103c-dock.c

@@ -250,7 +250,7 @@ static int tf103c_dock_hid_raw_request(struct hid_device *hid, u8 reportnum,
 	return 0;
 }
 
-static struct hid_ll_driver tf103c_dock_hid_ll_driver = {
+static const struct hid_ll_driver tf103c_dock_hid_ll_driver = {
 	.parse = tf103c_dock_hid_parse,
 	.start = tf103c_dock_hid_start,
 	.stop = tf103c_dock_hid_stop,