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/Kconfig b/arch/arm/Kconfig
index e63309a..215efdc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -841,6 +841,18 @@
 	help
 	  Support for Freescale LS1043ARDB platform.
 
+config TARGET_LS1046ARDB
+	bool "Support ls1046ardb"
+	select ARM64
+	select ARMV8_MULTIENTRY
+	select SUPPORT_SPL
+	select DM_SPI_FLASH if DM_SPI
+	help
+	  Support for Freescale LS1046ARDB platform.
+	  The LS1046A Reference Design Board (RDB) is a high-performance
+	  development platform that supports the QorIQ LS1046A
+	  Layerscape Architecture processor.
+
 config TARGET_H2200
 	bool "Support h2200"
 	select CPU_PXA
@@ -985,6 +997,7 @@
 source "board/freescale/ls1043aqds/Kconfig"
 source "board/freescale/ls1021atwr/Kconfig"
 source "board/freescale/ls1043ardb/Kconfig"
+source "board/freescale/ls1046ardb/Kconfig"
 source "board/freescale/ls1012aqds/Kconfig"
 source "board/freescale/ls1012ardb/Kconfig"
 source "board/freescale/ls1012afrdm/Kconfig"