Defined defconfig compare-to bisection function.
Defined defconfig compare-to bisection function.

Change-Id: I6ca95928fc8aa79e0af0576aaf52452aeec45fbf

kernelci/kernelci-backend,joyxu/kernelci-backend,kernelci/kernelci-backend,joyxu/kernelci-backend,joyxu/kernelci-backend