nitrogen8mn: add machine configuration

Platform details:
https://boundarydevices.com/product/nitrogen8m-nano/

Signed-off-by: Chris Dimich <Chris.Dimich@boundarydevices.com>

conf/machine/nitrogen8mn.conf

@@ -0,0 +1,48 @@
+#@TYPE: Machine
+#@NAME: Boundary Devices Nitrogen8M Nano
+#@SOC: i.MX8 Nano
+#@DESCRIPTION: Machine configuration for Boundary Devices Nitrogen8M Nano
+#@MAINTAINER: Chris Dimich <chris.dimich@boundarydevices.com>
+
+MACHINEOVERRIDES =. "mx8:mx8mn:"
+
+require conf/machine/include/imx-base.inc
+require conf/machine/include/arm/arch-arm64.inc
+
+# Kernel configuration
+PREFERRED_PROVIDER_virtual/kernel ??= "linux-boundary"
+PREFERRED_VERSION_linux-boundary = "4.14%"
+KERNEL_DEVICETREE = "freescale/imx8mn-nitrogen8mn.dtb \
+		     freescale/imx8mn-nitrogen8mn_som.dtb \
+		     freescale/imx8mn-nitrogen8_nano.dtb \
+"
+
+KERNEL_IMAGETYPE = "Image"
+KERNEL_DEFCONFIG = "boundary_defconfig"
+RDEPENDS_${KERNEL_PACKAGE_NAME}-base = ""
+
+# U-Boot configuration
+PREFERRED_PROVIDER_u-boot ??= "u-boot-boundary"
+PREFERRED_PROVIDER_virtual/bootloader ??= "u-boot-boundary"
+SPL_BINARY = "spl/u-boot-spl.bin"
+UBOOT_DTB_NAME ?= "imx8mn-nitrogen8_nano.dtb"
+UBOOT_MACHINE ?= "nitrogen8_nano_8mn1gr0_defconfig"
+UBOOT_MAKE_TARGET = ""
+UBOOT_SUFFIX = "bin"
+
+# wic support
+WKS_FILE = "sdimage-bootpart.wks"
+IMAGE_BOOT_FILES_append = " \
+	boot.scr-${MACHINE};boot.scr \
+"
+WKS_FILE_DEPENDS_mx8 += " \
+	u-boot-script-boundary \
+	e2fsprogs-native \
+	bmap-tools-native \
+"
+
+SERIAL_CONSOLES = "115200;ttymxc1"
+
+MACHINE_FEATURES += " pci wifi bluetooth"
+
+DEFAULTTUNE_mx8mn = "aarch64"