leds: lp55xx: Initialize enable GPIO direction to output

The "Convert to use GPIO descriptors" commit changed the
initialization of the enable GPIO from GPIOF_DIR_OUT to
GPIOD_ASIS.  This breaks systems where the GPIO does not
default to output.  Changing the enable initialization
to GPIOD_OUT_LOW.

Signed-off-by: Doug Zobel <dougdev334@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

drivers/leds/leds-lp55xx-common.c

@@ -694,7 +694,7 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
 	of_property_read_u8(np, "clock-mode", &pdata->clock_mode);
 
 	pdata->enable_gpiod = devm_gpiod_get_optional(dev, "enable",
-						      GPIOD_ASIS);
+						      GPIOD_OUT_LOW);
 	if (IS_ERR(pdata->enable_gpiod))
 		return ERR_CAST(pdata->enable_gpiod);