make sure u-boot-tools is installed on snappy arm64

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (2.362) UNRELEASED; urgency=medium
+
+  * make sure u-boot-tools is installed on snappy arm64
+
+ -- Oliver Grawert <ogra@ubuntu.com>  Tue, 08 Dec 2015 16:47:21 +0100
+
 livecd-rootfs (2.361) xenial; urgency=medium
 
   * live-build/ubuntu-core/hooks/01-setup_user.chroot:

live-build/auto/config

@@ -417,6 +417,9 @@ case $PROJECT in
 				armhf)
 					add_package install flash-kernel u-boot-tools
 					;;
+				arm64)
+					add_package install u-boot-tools
+                                        ;;
 			esac
 			OPTS="${OPTS:+$OPTS }--linux-packages=none --initramfs=none"