ARM: at91: dt: add dts files for sama5d3xek board

Add the device tree files for sama5d3xek board.

The dts files are copied from Linux-4.9, do the changes as below.
 - add reg property for the pinctrl node.
 - move the gpio nodes (pioA, pioB, pioC ...) as the pinctrl's
   slibling nodes.
 - add the "u-boot,dm-pre-reloc" property to determine which nodes
   which are needed by SPL and by the board_init_f stage.
 - fix the compile warning.
 - add spi0 node aliases.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
diff --git a/arch/arm/dts/sama5d35ek.dts b/arch/arm/dts/sama5d35ek.dts
new file mode 100644
index 0000000..4e37cfdc
--- /dev/null
+++ b/arch/arm/dts/sama5d35ek.dts
@@ -0,0 +1,59 @@
+/*
+ * sama5d35ek.dts - Device Tree file for SAMA5D35-EK board
+ *
+ *  Copyright (C) 2013 Atmel,
+ *                2013 Ludovic Desroches <ludovic.desroches@atmel.com>
+ *
+ * Licensed under GPLv2 or later.
+ */
+/dts-v1/;
+#include "sama5d35.dtsi"
+#include "sama5d3xmb.dtsi"
+
+/ {
+	model = "Atmel SAMA5D35-EK";
+	compatible = "atmel,sama5d35ek", "atmel,sama5d3xmb", "atmel,sama5d3xcm", "atmel,sama5d35", "atmel,sama5d3", "atmel,sama5";
+
+	aliases {
+		spi0 = &spi0;
+	};
+
+	ahb {
+		apb {
+			spi0: spi@f0004000 {
+				status = "okay";
+			};
+
+			can0: can@f000c000 {
+				status = "okay";
+			};
+
+			i2c1: i2c@f0018000 {
+				status = "okay";
+			};
+
+			macb0: ethernet@f0028000 {
+				status = "okay";
+			};
+
+			isi: isi@f0034000 {
+				status = "okay";
+			};
+
+			macb1: ethernet@f802c000 {
+				status = "okay";
+			};
+		};
+	};
+
+	gpio_keys {
+		compatible = "gpio-keys";
+
+		pb_user1 {
+			label = "pb_user1";
+			gpios = <&pioE 27 GPIO_ACTIVE_HIGH>;
+			linux,code = <0x100>;
+			wakeup-source;
+		};
+	};
+};