video: backlight: da9052: Constify platform_device_id

The platform_device_id is not modified by the driver and core uses it as
const.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/video/backlight/da9052_bl.c

···
 	return 0;
 }
 
-static struct platform_device_id da9052_wled_ids[] = {
+static const struct platform_device_id da9052_wled_ids[] = {
 	{
 		.name		= "da9052-wled1",
 		.driver_data	= DA9052_TYPE_WLED1,