imx: Add support for i.MX8MM Beacon EmbeddedWorks devkit.

Beacon EmbeddedWorks, formerly known as Logic PD, is releasing
a devkit based on the i.MX8M Mini SoC consisting of baseboard +
SOM.

It supports eMMC on the SOM, microSD on the baseboard, various
GPIO, the PINCTRL, and UART.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/board/beacon/imx8mm/Makefile b/board/beacon/imx8mm/Makefile
new file mode 100644
index 0000000..7d3bd31
--- /dev/null
+++ b/board/beacon/imx8mm/Makefile
@@ -0,0 +1,13 @@
+#
+# Copyright 2020 Compass Electronics Group, LLC
+#
+# SPDX-License-Identifier:      GPL-2.0+
+#
+
+obj-y += imx8mm_beacon.o
+obj-y += ../../freescale/common/
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+obj-y += lpddr4_timing.o
+endif