HID: surface-hid: Constify lowlevel HID driver

Since commit 52d2253 ("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 <[email protected]>
Reviewed-by: Maximilian Luz <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Benjamin Tissoires <[email protected]>

Author: t-8ch

drivers/hid/surface-hid/surface_hid_core.c

@@ -174,7 +174,7 @@ static int surface_hid_raw_request(struct hid_device *hid, unsigned char reportn
 	return -EIO;
 }
 
-static struct hid_ll_driver surface_hid_ll_driver = {
+static const struct hid_ll_driver surface_hid_ll_driver = {
 	.start       = surface_hid_start,
 	.stop        = surface_hid_stop,
 	.open        = surface_hid_open,