armv8: ls1046ardb: Add LS1046ARDB board support

LS1046ARDB Specification:
-------------------------
Memory subsystem:
 * 8GByte DDR4 SDRAM (64bit bus)
 * 512 Mbyte NAND flash
 * Two 64 Mbyte high-speed SPI flash
 * SD connector to interface with the SD memory card
 * On-board 4G eMMC

Ethernet:
 * Two XFI 10G ports
 * Two SGMII ports
 * Two RGMII ports

PCIe:
 * PCIe1 (SerDes2 Lane0) to miniPCIe slot
 * PCIe2 (SerDes2 Lane1) to x2 PCIe slot
 * PCIe3 (SerDes2 Lane2) to x4 PCIe slot

SATA:
 * SerDes2 Lane3 to SATA port

USB 3.0: one super speed USB 3.0 type A port
	 one Micro-AB port

UART: supports two UARTs up to 115200 bps for console

Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/dts/fsl-ls1046a-rdb.dts b/arch/arm/dts/fsl-ls1046a-rdb.dts
new file mode 100644
index 0000000..4902454
--- /dev/null
+++ b/arch/arm/dts/fsl-ls1046a-rdb.dts
@@ -0,0 +1,44 @@
+/*
+ * Device Tree Include file for Freescale Layerscape-1046A family SoC.
+ *
+ * Copyright 2016, Freescale Semiconductor
+ *
+ * Mingkai Hu <Mingkai.hu@freescale.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+/include/ "fsl-ls1046a.dtsi"
+
+/ {
+	model = "LS1046A RDB Board";
+
+	aliases {
+		spi0 = &qspi;
+	};
+
+};
+
+&qspi {
+	bus-num = <0>;
+	status = "okay";
+
+	qflash0: s25fs512s@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		spi-max-frequency = <50000000>;
+		reg = <0>;
+	};
+
+	qflash1: s25fs512s@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-flash";
+		spi-max-frequency = <50000000>;
+		reg = <1>;
+	 };
+};