The LEDs can only by turned on/off, so max_brightness should be set to 1.
Without this the max_brightness sysfs-attribute will report 255 which is
wrong.
Reviewed-by: Marek Behún <kabel@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>