ARM: dts: imx27-phytec-phycore-som: Add initial support for PCM970 RDK

Patch adds initial dts for Phytec PCM970 Rapid development kit.
- Added definition for UART0 and UART1.
- Added additional SPI chipselect which used on RDK for ZegBee module.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/Makefile

@@ -104,6 +104,7 @@ dtb-$(CONFIG_ARCH_MXC) += \
 	imx27-apf27dev.dtb \
 	imx27-pdk.dtb \
 	imx27-phytec-phycore-som.dtb \
+	imx27-phytec-phycore-rdk.dtb \
 	imx31-bug.dtb \
 	imx51-apf51.dtb \
 	imx51-apf51dev.dtb \

arch/arm/boot/dts/imx27-phytec-phycore-rdk.dts

+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include "imx27-phytec-phycore-som.dts"
+
+/ {
+	model = "Phytec pcm970";
+	compatible = "phytec,imx27-pcm970", "phytec,imx27-pcm038", "fsl,imx27";
+};
+
+&cspi1 {
+	fsl,spi-num-chipselects = <2>;
+	cs-gpios = <&gpio4 28 0>, <&gpio4 27 0>;
+};
+
+&uart1 {
+	fsl,uart-has-rtscts;
+};
+
+&uart2 {
+	fsl,uart-has-rtscts;
+	status = "okay";
+};