backlight: hp680_bl: fix checkpatch error and warning

This patch fixes the checkpatch error and warning as below:

  WARNING: please, no space before tabs
  WARNING: please, no spaces at the start of a line
  ERROR: do not initialise statics to 0 or NULL
  ERROR: code indent should use tabs where possible
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/backlight/hp680_bl.c

@@ -26,7 +26,7 @@
 #define HP680_DEFAULT_INTENSITY 10
 
 static int hp680bl_suspended;
-static int current_intensity = 0;
+static int current_intensity;
 static DEFINE_SPINLOCK(bl_lock);
 
 static void hp680bl_send_intensity(struct backlight_device *bd)
@@ -168,7 +168,7 @@ static int __init hp680bl_init(void)
 static void __exit hp680bl_exit(void)
 {
 	platform_device_unregister(hp680bl_device);
- 	platform_driver_unregister(&hp680bl_driver);
+	platform_driver_unregister(&hp680bl_driver);
 }
 
 module_init(hp680bl_init);