Automated DT boot report for various ARM defconfigs.

Boot test simply checks if kernel can boot to initramfs with busybox and run some basic commands (e.g. 'cat /proc/cpuinfo').

Tree/Branch: linus/HEAD Git describe: v3.11-7547-g44598f9 Commit: 44598f98b9 Merge tag 'boards-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc