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/sama5d3_tcb1.dtsi b/arch/arm/dts/sama5d3_tcb1.dtsi
new file mode 100644
index 0000000..5be60b4
--- /dev/null
+++ b/arch/arm/dts/sama5d3_tcb1.dtsi
@@ -0,0 +1,39 @@
+/*
+ * sama5d3_tcb1.dtsi - Device Tree Include file for SAMA5D3 SoC with
+ * 2 TC blocks.
+ *
+ * Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
+ *
+ * Licensed under GPLv2.
+ */
+
+#include <dt-bindings/pinctrl/at91.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clock/at91.h>
+
+/ {
+	aliases {
+		tcb1 = &tcb1;
+	};
+
+	ahb {
+		apb {
+			pmc: pmc@fffffc00 {
+				periphck {
+					tcb1_clk: tcb1_clk@27 {
+						#clock-cells = <0>;
+						reg = <27>;
+					};
+				};
+			};
+
+			tcb1: timer@f8014000 {
+				compatible = "atmel,at91sam9x5-tcb";
+				reg = <0xf8014000 0x100>;
+				interrupts = <27 IRQ_TYPE_LEVEL_HIGH 0>;
+				clocks = <&tcb1_clk>, <&clk32k>;
+				clock-names = "t0_clk", "slow_clk";
+			};
+		};
+	};
+};