feat(plat/nxp/ls1043ardb): add ls1043ardb board support

The LS1043A reference design board (RDB) is a computing, evaluation,
and development platform that supports the Layerscape LS1043A
architecture processor.

The old implementation in tf-a (plat/layerscape/board/ls1043/) is removed,
and this patch is adding it back, it is using the unified software
component and architecture with all the other Layerscape platforms.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Signed-off-by: Ruchika Gupta <ruchika.gupta@nxp.com>
Change-Id: I83eee2f9254267b148960b05e25b6c9ba86cf07e
diff --git a/plat/nxp/soc-ls1043a/ls1043ardb/platform_def.h b/plat/nxp/soc-ls1043a/ls1043ardb/platform_def.h
new file mode 100644
index 0000000..4721a32
--- /dev/null
+++ b/plat/nxp/soc-ls1043a/ls1043ardb/platform_def.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2018-2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLATFORM_DEF_H
+#define PLATFORM_DEF_H
+
+#include <plat_def.h>
+#include <plat_default_def.h>
+
+#endif /* PLATFORM_DEF_H */