board: intel: Add socdk board support for Intel N5X device

Add N5X SoC devkit board.

Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
diff --git a/board/intel/n5x-socdk/Makefile b/board/intel/n5x-socdk/Makefile
new file mode 100644
index 0000000..accfdcd
--- /dev/null
+++ b/board/intel/n5x-socdk/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2020-2021 Intel Corporation <www.intel.com>
+#
+# SPDX-License-Identifier:	GPL-2.0
+#
+
+obj-y	:= socfpga.o