Compile with SaberMod toolchains

4.7 for kernel
4.9 for ROM
Disable SaberMod for ROM
Revert "Disable SaberMod for ROM"

This reverts commit f6c89104d6baad090367a20763a1398d33c0b761.
Use 4.6 toolchain for kernel

4.7 gives reboot problems
Back to SaberMod for kernel as well
Back to stock 4.6 toolchain for kernel

Kernel feels smoother