MIPS: add BMIPS Comtrend AR-5387un board

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

board/comtrend/ar5387un/Kconfig

@@ -0,0 +1,12 @@
+if BOARD_COMTREND_AR5387UN
+
+config SYS_BOARD
+	default "ar5387un"
+
+config SYS_VENDOR
+	default "comtrend"
+
+config SYS_CONFIG_NAME
+	default "comtrend_ar5387un"
+
+endif

board/comtrend/ar5387un/MAINTAINERS

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+COMTREND AR-5387UN BOARD
+M:	Álvaro Fernández Rojas <noltari@gmail.com>
+S:	Maintained
+F:	board/comtrend/ar-5387un/
+F:	include/configs/comtrend_ar5387un.h
+F:	configs/comtrend_ar5387un_ram_defconfig

board/comtrend/ar5387un/Makefile

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+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += ar-5387un.o

board/comtrend/ar5387un/ar-5387un.c

@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>