backlight: Convert from struct class_device to struct device

Convert the backlight and LCD classes from struct class_device
to struct device since class_device is scheduled for removal.

One nasty API break is the backlight power attribute has had to be
renamed to bl_power and the LCD power attribute has had to be renamed
to lcd_power since the original names clash with the core. I can't see
a way around this.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/lcd.h b/include/linux/lcd.h
index 598793c..1d37978 100644
--- a/include/linux/lcd.h
+++ b/include/linux/lcd.h
@@ -62,8 +62,8 @@
 	struct mutex update_lock;
 	/* The framebuffer notifier block */
 	struct notifier_block fb_notif;
-	/* The class device structure */
-	struct class_device class_dev;
+
+	struct device dev;
 };
 
 static inline void lcd_set_power(struct lcd_device *ld, int power)
@@ -75,9 +75,15 @@
 }
 
 extern struct lcd_device *lcd_device_register(const char *name,
-	void *devdata, struct lcd_ops *ops);
+	struct device *parent, void *devdata, struct lcd_ops *ops);
 extern void lcd_device_unregister(struct lcd_device *ld);
 
-#define to_lcd_device(obj) container_of(obj, struct lcd_device, class_dev)
+#define to_lcd_device(obj) container_of(obj, struct lcd_device, dev)
+
+static inline void * lcd_get_data(struct lcd_device *ld_dev)
+{
+	return dev_get_drvdata(&ld_dev->dev);
+}
+
 
 #endif