Add new build target for ODROID Ethcer

Change-Id: Iadeda0cab0ddbe3b9eb3b992c9bed2f2a0bf1395

custom/etcher/config

@@ -0,0 +1,8 @@
+BOARD=odroidn2
+ARCH=arm64
+DISTRO=focal
+FLAVOUR=server
+DEFAULT_USER=odroid
+DEFAULT_PASSWD=odroid
+ALLOW_ROOT_LOGIN=false
+ISOIMAGE=true

custom/etcher/fixups/S70-odroid-etcher

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+PACKAGE=$(curl -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/awesometic/odroid-etcher/releases | grep download_url | grep arm64 | sort -rV | head -1 | awk '{print $2}' | tr -d '"')
+
+wget ${PACKAGE} -O /tmp/odroid-etcher.deb
+dpkg -i /tmp/odroid-etcher.deb || true
+apt install -y --no-install-recommends --fix-broken
+
+chmod 644 /etc/systemd/system/odroid-etcher.service
+systemctl enable odroid-etcher

custom/etcher/overlay/etc/systemd/system/odroid-etcher.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=ODROID Etcher
+StartLimitIntervalSec=0
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=1
+ExecStart=/usr/bin/xinit \
+	/usr/bin/odroid-etcher-electron
+
+[Install]
+WantedBy=multi-user.target

custom/etcher/packages

@@ -0,0 +1,4 @@
+curl
+policykit-1
+wget
+xorg