ACPI: sysfs eject support for ACPI scan handlers

Changed sysfs eject, acpi_eject_store(), so that it doesn't return
error codes for devices nodes with ACPI scan handlers attached and
no ACPI drivers.

[rjw: Changelog]
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/scan.c

@@ -203,7 +203,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
 		return -EINVAL;
 	}
 #ifndef FORCE_EJECT
-	if (acpi_device->driver == NULL) {
+	if (!acpi_device->driver && !acpi_device->handler) {
 		ret = -ENODEV;
 		goto err;
 	}