ARM: dts: imx27-phytec-phycore-som: Add spi-cs-high property to PMIC

Since SPI core does not use GPIO bindings for CS GPIOs,
we should add an active high level declaration.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx27-phytec-phycore-som.dtsi

@@ -61,8 +61,9 @@ pmic: mc13783@0 {
 		#address-cells = <1>;
 		#size-cells = <0>;
 		compatible = "fsl,mc13783";
-		spi-max-frequency = <20000000>;
 		reg = <0>;
+		spi-cs-high;
+		spi-max-frequency = <20000000>;
 		interrupt-parent = <&gpio2>;
 		interrupts = <23 IRQ_TYPE_LEVEL_HIGH>;
 		fsl,mc13xxx-uses-adc;