drivers/video/backlight/da9052_bl.c: add missing const

Add 'const' to static array that was missing it in its definition.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Ashish Jangam <ashish.jangam@kpitcummins.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/da9052_bl.c

@@ -34,7 +34,7 @@ enum {
 	DA9052_TYPE_WLED3,
 };
 
-static unsigned char wled_bank[] = {
+static const unsigned char wled_bank[] = {
 	DA9052_LED1_CONF_REG,
 	DA9052_LED2_CONF_REG,
 	DA9052_LED3_CONF_REG,