feat(plat/nxp/ls1028ardb): add ls1028ardb board support

The LS1028A reference design board (RDB) is a computing,
evaluation, and development platform that supports industrial
IoT applications, human machine interface solutions, and
industrial networking.

It supports the following features:
1. Layerscape LS1028A dual-core processor based on Cortex-A72
   at 1.3 GHz.
2. 4 GB DDR4 SDRAM w/ECC
3. Support Ethernet:
   1) x1 RJ45 connector for 1Gbps Ethernet support w/TSN, 1588
   2) x4 RJ45 connector for 1Gbps Ethernet switch support w/TSN,
      1588 (QSGMII)
3. With Basic Peripherals and Interconnect
   2x M.2 Type E slots with PCIe Gen 3.0 x1
   1x M.2 Type B slot with SATA 3.0 (resistor mux with 1 Type E slot)
   1x Type A USB 3.0 super-speed port
   1x Type C USB 3.0 super-speed port
   1x DisplayPort interface
   2x DB9 RS232 serial ports
   2x DB9 CAN interfaces
   1x 3.5 mm audio out
   2x MikroBUS™ sockets

Signed-off-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Signed-off-by: York Sun <york.sun@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Change-Id: I48ee254a488ae4af227641da3875a1e9a63a720c
diff --git a/plat/nxp/soc-ls1028a/ls1028ardb/platform.mk b/plat/nxp/soc-ls1028a/ls1028ardb/platform.mk
new file mode 100644
index 0000000..c455000
--- /dev/null
+++ b/plat/nxp/soc-ls1028a/ls1028ardb/platform.mk
@@ -0,0 +1,33 @@
+#
+# Copyright 2020-2021 NXP
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+# Board-specific build parameters
+BOOT_MODE	?=	flexspi_nor
+BOARD		:=	ls1028ardb
+POVDD_ENABLE	:=	no
+WARM_BOOT	:=	no
+
+# DDR build parameters
+NUM_OF_DDRC		:=	1
+CONFIG_DDR_NODIMM	:=	1
+DDR_ECC_EN		:=	yes
+
+# On-board flash
+FLASH_TYPE	:=	MT35XU02G
+XSPI_FLASH_SZ	:=	0x10000000
+
+BL2_SOURCES	+=	${BOARD_PATH}/ddr_init.c \
+			${BOARD_PATH}/platform.c
+
+SUPPORTED_BOOT_MODE	:=	flexspi_nor	\
+				sd		\
+				emmc
+
+# Add platform board build info
+include plat/nxp/common/plat_make_helper/plat_common_def.mk
+
+# Add SoC build info
+include plat/nxp/soc-ls1028a/soc.mk