feat(ls1046ardb): add ls1046ardb board support

The LS1046A reference design board (RDB) is a high-performance
computing, evaluation, and development platform that supports
the Layerscape LS1046A architecture processor.

Signed-off-by: Jiafei Pan <Jiafei.Pan@nxp.com>
Signed-off-by: York Sun <york.sun@nxp.com>
Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: Ib7a01b309e0b0acc7f38e22b138e9e181dff244a
diff --git a/plat/nxp/soc-ls1046a/ls1046ardb/platform_def.h b/plat/nxp/soc-ls1046a/ls1046ardb/platform_def.h
new file mode 100644
index 0000000..7f98bb1
--- /dev/null
+++ b/plat/nxp/soc-ls1046a/ls1046ardb/platform_def.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2018-2022 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 */