backlight: fix backlight_device_register compile failures

Fix breakage from commit 519ab5f2 which
didn't update all references to backlight_device_register causing
compile failures.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/video/backlight/corgi_bl.c

@@ -121,7 +121,7 @@ static int corgibl_probe(struct platform_device *pdev)
 		machinfo->limit_mask = -1;
 
 	corgi_backlight_device = backlight_device_register ("corgi-bl",
-		NULL, &corgibl_data);
+		&pdev->dev, NULL, &corgibl_data);
 	if (IS_ERR (corgi_backlight_device))
 		return PTR_ERR (corgi_backlight_device);
 

drivers/video/backlight/hp680_bl.c

@@ -105,7 +105,7 @@ static struct backlight_properties hp680bl_data = {
 static int __init hp680bl_probe(struct platform_device *dev)
 {
 	hp680_backlight_device = backlight_device_register ("hp680-bl",
-		NULL, &hp680bl_data);
+		&dev->dev, NULL, &hp680bl_data);
 	if (IS_ERR (hp680_backlight_device))
 		return PTR_ERR (hp680_backlight_device);
 

drivers/video/backlight/locomolcd.c

@@ -184,7 +184,7 @@ static int locomolcd_probe(struct locomo_dev *ldev)
 
 	local_irq_restore(flags);
 
-	locomolcd_bl_device = backlight_device_register("locomo-bl", NULL, &locomobl_data);
+	locomolcd_bl_device = backlight_device_register("locomo-bl", &ldev->dev, NULL, &locomobl_data);
 
 	if (IS_ERR (locomolcd_bl_device))
 		return PTR_ERR (locomolcd_bl_device);