leds: Add leds-wrap default-trigger

The power led is normally lit after boot, let's use the default-on
trigger as the default trigger for it.  This gets the initial brightness
value right and being on is the default behaviour we expect for a power
led.
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

drivers/leds/leds-wrap.c

@@ -55,6 +55,7 @@ static void wrap_extra_led_set(struct led_classdev *led_cdev,
 static struct led_classdev wrap_power_led = {
 	.name			= "wrap::power",
 	.brightness_set		= wrap_power_led_set,
+	.default_trigger	= "default-on",
 };
 
 static struct led_classdev wrap_error_led = {