backlight: mp3309c: 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.

Signed-off-by: Thomas Zimmermann <[e-mail]>
Reviewed-by: Daniel Thompson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/video/backlight/mp3309c.c

···
 	props.max_brightness = pdata->max_brightness;
 	props.scale = BACKLIGHT_SCALE_LINEAR;
 	props.type = BACKLIGHT_RAW;
-	props.power = FB_BLANK_UNBLANK;
+	props.power = BACKLIGHT_POWER_ON;
 	chip->bl = devm_backlight_device_register(dev, "mp3309c", dev, chip,
 						  &mp3309c_bl_ops, &props);
 	if (IS_ERR(chip->bl))
···
 	struct mp3309c_chip *chip = i2c_get_clientdata(client);
 	struct backlight_device *bl = chip->bl;
 
-	bl->props.power = FB_BLANK_POWERDOWN;
+	bl->props.power = BACKLIGHT_POWER_OFF;
 	bl->props.brightness = 0;
 	backlight_update_status(chip->bl);
 }