board: mntre: imx8mq: Add MNT Reform 2 board support

The MNT Reform 2 is a modular DIY laptop.  In its initial version it
is based on the BoundaryDevices i.MX8MQ SoM.  Some parts have been
lifted from BoundaryDevices official U-Boot downstream project.

Signed-off-by: Patrick Wildt <patrick@blueri.se>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/board/mntre/imx8mq_reform2/Kconfig b/board/mntre/imx8mq_reform2/Kconfig
new file mode 100644
index 0000000..f9260cb
--- /dev/null
+++ b/board/mntre/imx8mq_reform2/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_IMX8MQ_REFORM2
+
+config SYS_BOARD
+	default "imx8mq_reform2"
+
+config SYS_VENDOR
+	default "mntre"
+
+config SYS_CONFIG_NAME
+	default "imx8mq_reform2"
+
+config IMX_CONFIG
+	default "arch/arm/mach-imx/imx8m/imximage.cfg"
+
+endif