leds/acpi: Fix merge fallout from acpi_driver_data change

Signed-off-by: Stephen Rothwell <[e-mail]>
Signed-off-by: Richard Purdie <[e-mail]>

drivers/leds/leds-hp-disk.c

···
 	adev.device = device;
 	strcpy(acpi_device_name(device), DRIVER_NAME);
 	strcpy(acpi_device_class(device), ACPI_MDPS_CLASS);
-	acpi_driver_data(device) = &adev;
+	device->driver_data = &adev;
 
 	ret = led_classdev_register(NULL, &hpled_led);
 	return ret;