CI: wire into Jenkins

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

Jenkinsfile

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+pipeline {
+    agent any
+
+    stages {
+        stage('Build') {
+            steps {
+                sh '/bin/bash ./jenkins_build.sh'
+            }
+        }
+    }
+}

jenkins_build.sh

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+#!/bin/bash
+
+
+#git://git.kernel.org/pub/scm/utils/dtc/dtc.git
+
+git_tag="v1.4.4"
+project="dtc"
+server="git://git.kernel.org/pub/scm/utils/dtc/dtc.git"
+
+if [ ! -d ${HOME}/git/ ] ; then
+	mkdir -p ${HOME}/git/ || true
+fi
+
+if [ ! -f ${HOME}/git/${project}/.git/config ] ; then
+	git clone ${server} ${HOME}/git/${project}/
+fi
+
+cd ${HOME}/git/${project}/
+make clean
+git checkout master -f
+git pull || true
+
+git checkout ${git_tag} -b ${git_tag}-build
+
+make clean
+make PREFIX=/usr/local/ CC=gcc CROSS_COMPILE= all
+echo "Installing into: /usr/local/bin/"
+sudo make PREFIX=/usr/local/ install
+sudo ln -sf /usr/local/bin/dtc /usr/bin/dtc
+echo "dtc: `/usr/local/bin/dtc --version`"