board: altera: stratix10: Add socdk board support for Stratix10 SoC

Add socdk board support for Stratix SoC

Signed-off-by: Chin Liang See <chin.liang.see@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

board/altera/stratix10-socdk/MAINTAINERS

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+SOCFPGA BOARD
+M:	Chin-Liang See <chin.liang.see@intel.com>
+M:	Dinh Nguyen <dinh.nguyen@intel.com>
+S:	Maintained
+F:	board/altera/stratix10-socdk/
+F:	include/configs/socfpga_stratix10_socdk.h
+F:	configs/socfpga_stratix10_defconfig

board/altera/stratix10-socdk/Makefile

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+#
+# Copyright (C) 2016-2017 Intel Corporation <www.intel.com>
+#
+# SPDX-License-Identifier:	GPL-2.0
+#
+
+obj-y	:= socfpga.o

board/altera/stratix10-socdk/socfpga.c

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+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
+ *
+ */
+
+#include <common.h>