[PATCH] backlight: remove obsolete comment for ->state

[Daniel Vetter <daniel.vetter@ffwll.ch>]

Jani spotted this when reviewing my earlier patch to remove the driver
internal usage of this field in

commit 3cf91adaa594e8933af1727942ac560e5c7bc70e
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Apr 25 19:42:52 2018 +0200

    backlight: Nuke BL_CORE_DRIVER1

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Daniel Thompson <daniel.thompson@linaro.org>
Cc: Jingoo Han <jingoohan1@gmail.com>
---
 include/linux/backlight.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 7fbf0539e14a..0b5897446dca 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -79,7 +79,6 @@ struct backlight_properties {
 	/* Backlight type */
 	enum backlight_type type;
 	/* Flags used to signal drivers of state changes */
-	/* Upper 4 bits are reserved for driver internal use */
 	unsigned int state;
 
 #define BL_CORE_SUSPENDED	(1 << 0)	/* backlight is suspended */
-- 
2.17.0