ARM: dts: imx: dh-imx6: Fix SPI CS polarity on DHCOM iMX6 PDK2

The SPI nCS signal is active low, make it so.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Ludwig Zenz <lzenz@dh-electronics.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/dts/imx6q-dhcom-som.dtsi b/arch/arm/dts/imx6q-dhcom-som.dtsi
index 387801d..524cd28 100644
--- a/arch/arm/dts/imx6q-dhcom-som.dtsi
+++ b/arch/arm/dts/imx6q-dhcom-som.dtsi
@@ -61,7 +61,7 @@
 };
 
 &ecspi1 {
-	cs-gpios = <&gpio2 30 GPIO_ACTIVE_HIGH>, <&gpio4 11 GPIO_ACTIVE_HIGH>;
+	cs-gpios = <&gpio2 30 GPIO_ACTIVE_LOW>, <&gpio4 11 GPIO_ACTIVE_LOW>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_ecspi1>;
 	status = "okay";