leds: triggers: default-on: Add module alias for module auto-loading

A bigger number of board device tree files, plus few drivers, set
default-on as default trigger for LED's. Therefore add an alias for
module auto-loading.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/7e94d26b-d772-4a07-b0f6-bb3111b9ff75@gmail.comSigned-off-by: Lee Jones <lee@kernel.org>

drivers/leds/trigger/ledtrig-default-on.c

@@ -28,3 +28,4 @@ module_led_trigger(defon_led_trigger);
 MODULE_AUTHOR("Nick Forbes <nick.forbes@incepta.com>");
 MODULE_DESCRIPTION("Default-ON LED trigger");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("ledtrig:default-on");