Voltage Control: generic voltage control for DTS based kernels

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: enable mV
defconfig: TAG it
Linaro-4.8 fixes
find7: Disable performance-killing debug options

Change-Id: I22d05f81cca7e590bbb69dd0a8ca77e345d32ca3
LGE KCAL control: intial adaptation from LGE G2 kernel for 8974Pro

Signed-off-by: Paul Reioux <reioux@gmail.com>
LGE KCAL control: intial adaptation from LGE G2 kernel for 8974Pro (part 2)
activate KCAL