auto-bisect for kernel build/boot/function regressions

This script bisects kernel for build/boot/func regressions on appointed board, run it under target kernel source tree.

If kernel friendly for network, it is a fully automatic bisect script, otherwise it is a semi-automatic scripts.

It will be better if has some way to automatic hardware reset board power. Or has some way send command via serial.

Usage: $./bisect.sh -g v3.11~2 -b v3.11 -t func 2>&1 | tee func.log

Any comments are appreciated!