MA-7219 [Android_6SX_SD]Brightness: Brightness is darker when boot up to launche on SX_SD than SX_ARD. 100%

Correct the pin of CABC_EN on sabresd 6SX board.

Signed-off-by: zhang sanshan <b51434@freescale.com>
diff --git a/arch/arm/boot/dts/imx6sx-sdb.dts b/arch/arm/boot/dts/imx6sx-sdb.dts
index 601e47d..d018e30 100644
--- a/arch/arm/boot/dts/imx6sx-sdb.dts
+++ b/arch/arm/boot/dts/imx6sx-sdb.dts
@@ -73,7 +73,7 @@
 		compatible = "hannstar,cabc";
 
 		lvds0 {
-			gpios = <&gpio4 26 GPIO_ACTIVE_HIGH>;
+			gpios = <&gpio4 18 GPIO_ACTIVE_HIGH>;
 		};
 	};