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/MAINTAINERS b/board/beacon/imx8mm/MAINTAINERS
new file mode 100644
index 0000000..e887db2
--- /dev/null
+++ b/board/beacon/imx8mm/MAINTAINERS
@@ -0,0 +1,7 @@
+i.MX8MM Beacon EmbeddedWorks Devkit
+
+M:	Adam Ford <aford173@gmail.com>
+S:	Maintained
+F:	board/beacon/imx8mm/
+F:	include/configs/imx8mm_beacon.h
+F:	configs/imx8mm_beacon_defconfig