platform/x86: asus-laptop: Use backlight power constants

Replace FB_BLANK_ constants with their counterparts from the
backlight subsystem. The values are identical, so there's no
change in functionality or semantics.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Corentin Chary <corentin.chary@gmail.com>
Cc: "Luke D. Jones" <luke@ljones.dev>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240731125220.1147348-3-tzimmermann@suse.deReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/asus-laptop.c

@@ -28,7 +28,6 @@
 #include <linux/err.h>
 #include <linux/proc_fs.h>
 #include <linux/backlight.h>
-#include <linux/fb.h>
 #include <linux/leds.h>
 #include <linux/platform_device.h>
 #include <linux/uaccess.h>
@@ -818,7 +817,7 @@ static int asus_backlight_init(struct asus_laptop *asus)
 
 	asus->backlight_device = bd;
 	bd->props.brightness = asus_read_brightness(bd);
-	bd->props.power = FB_BLANK_UNBLANK;
+	bd->props.power = BACKLIGHT_POWER_ON;
 	backlight_update_status(bd);
 	return 0;
 }