arm64: imx: Add support for imx8mp-beacon-kit

Beacon Embedded has an i.MX8M Plus development kit which consists
of a SOM + baseboard.  The SOM includes Bluetooth, WiFi, QSPI, eMMC,
and one Ethernet PHY. The baseboard includes audio, HDMI, USB-C Dual
Role port, USB Hub with five ports, a PCIe slot, and a second Ethernet
PHY.  The device trees are already queued for inclusion in Linux 6.3.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/beacon/imx8mp/MAINTAINERS b/board/beacon/imx8mp/MAINTAINERS
new file mode 100644
index 0000000..3750551
--- /dev/null
+++ b/board/beacon/imx8mp/MAINTAINERS
@@ -0,0 +1,6 @@
+i.MX8MP Beacon EmbeddedWorks Devkit
+M:	Adam Ford <aford173@gmail.com>
+S:	Maintained
+F:	board/beacon/imx8mp/
+F:	include/configs/imx8mp_beacon.h
+F:	configs/imx8mp_beacon_defconfig