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/Kconfig b/board/menlo/m53menlo/Kconfig
new file mode 100644
index 0000000..1953f50
--- /dev/null
+++ b/board/menlo/m53menlo/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_M53MENLO
+
+config SYS_BOARD
+	default "m53menlo"
+
+config SYS_VENDOR
+	default "menlo"
+
+config SYS_SOC
+	default "mx5"
+
+config SYS_CONFIG_NAME
+	default "m53menlo"
+
+endif