ARM: dts: vf610-zii-dev-rev-b: Specify CS as GPIO_ACTIVE_LOW in spi0

Specify CS as GPIO_ACTIVE_LOW in spi0 to fix the following warning:

m25p128@0 enforce active low on chipselect handle
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/vf610-zii-dev-rev-b.dts

@@ -295,7 +295,7 @@ spi0 {
 		gpio-sck  = <&gpio1 12 GPIO_ACTIVE_HIGH>;
 		gpio-mosi = <&gpio1 11 GPIO_ACTIVE_HIGH>;
 		gpio-miso = <&gpio1 10 GPIO_ACTIVE_HIGH>;
-		cs-gpios  = <&gpio1  9 GPIO_ACTIVE_HIGH
+		cs-gpios  = <&gpio1  9 GPIO_ACTIVE_LOW
 			     &gpio1  8 GPIO_ACTIVE_HIGH>;
 		num-chipselects = <2>;