pwm: atmel-hlcdc: Enable module autoloading

Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based
on the alias from of_device_id table.

Signed-off-by: Liao Chen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Uwe Kleine-König <[e-mail]>

drivers/pwm/pwm-atmel-hlcdc.c

···
 	{ .compatible = "atmel,hlcdc-pwm" },
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, atmel_hlcdc_pwm_dt_ids);
 
 static struct platform_driver atmel_hlcdc_pwm_driver = {
 	.driver = {