armv7: Add support of ls1021a-iot board

The patch adds support for Freescale ls1021a-iot board.

Signed-off-by: Feng Li <feng.li_2@nxp.com>
[YS: rewrite commit message, fix whitespace in Kconfig]
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/ls1021aiot/Makefile b/board/freescale/ls1021aiot/Makefile
new file mode 100644
index 0000000..05709e6
--- /dev/null
+++ b/board/freescale/ls1021aiot/Makefile
@@ -0,0 +1,9 @@
+#
+# Copyright 2016 Freescale Semiconductor, Inc.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += ls1021aiot.o
+obj-$(CONFIG_FSL_DCU_FB) += dcu.o
+obj-$(CONFIG_ARMV7_PSCI) += psci.o