[PATCH -next] backlight: fix ot200_bl build

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxx>

Fix build error when GPIO_CS5535 is not enabled:

drivers/built-in.o: In function `ot200_backlight_probe':
ot200_bl.c:(.text+0x205bf): undefined reference to `cs5535_gpio_set'
ot200_bl.c:(.text+0x205d1): undefined reference to `cs5535_gpio_set'

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
Cc: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
Cc: Richard Purdie <rpurdie@xxxxxxxxx>
---
 drivers/video/backlight/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20120229.orig/drivers/video/backlight/Kconfig
+++ linux-next-20120229/drivers/video/backlight/Kconfig
@@ -343,7 +343,7 @@ config BACKLIGHT_LP855X
 
 config BACKLIGHT_OT200
 	tristate "Backlight driver for ot200 visualisation device"
-	depends on BACKLIGHT_CLASS_DEVICE && CS5535_MFGPT
+	depends on BACKLIGHT_CLASS_DEVICE && CS5535_MFGPT && GPIO_CS5535
 	help
 	  To compile this driver as a module, choose M here: the module will be
 	  called ot200_bl.
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