release: add release script

Change-Id: Ib3cd29cf1875e7ad182262d7caa33ff35f28aa85
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10909
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

util/release/build-release

@@ -0,0 +1,16 @@
+#!/bin/bash
+# $1: new version name
+set -e
+if [ -z "$1" ]; then
+	echo "usage: $0 version"
+	echo "tags a new coreboot version and creates a tar archive"
+	exit 1
+fi
+git clone --recurse-submodules http://review.coreboot.org/coreboot.git coreboot-$1
+cd coreboot-$1
+git submodule update --init --checkout
+git tag -a --force $1 -m "coreboot version $1"
+printf "$1-$(git log --pretty=%H|head -1)\n" > .coreboot-version
+cd ..
+tar --exclude-vcs --exclude=coreboot-${1}/3rdparty/blobs -cvf - coreboot-${1} |xz -9 > coreboot-${1}.tar.xz
+tar --exclude-vcs -cvf - coreboot-${1}/3rdparty/blobs |xz -9 > coreboot-blobs-${1}.tar.xz