arm: mx5: Add M53Menlo board

Add Menlosystems M53 board, based on the M53 SoM.
This board has Ethernet, USB host, USB gadget, UART and LCD on it.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/board/menlo/m53menlo/Makefile b/board/menlo/m53menlo/Makefile
new file mode 100644
index 0000000..b4ab95a
--- /dev/null
+++ b/board/menlo/m53menlo/Makefile
@@ -0,0 +1,9 @@
+#
+# Menlosystems M53Menlo
+# Copyright (C) 2012-2017 Marek Vasut <marex@denx.de>
+# Copyright (C) 2014-2017 Olaf Mandel <o.mandel@menlosystems.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= m53menlo.o