immvibespi: add sysfs interface for controlling vibe intensity

This is based of codeworkx's work on smdk4412

Useful with something like this:
http://review.cyanogenmod.org/#/c/35981/

Change-Id: I1c1c16b4cefd600ebc6caa603d92044c466cf792
Merge remote-tracking branch 'github/cm-10.1' into lk-cm-merged
ramdisk: Add permissions for vibration control

Change-Id: I63eb26d766a4bfa4a7a62b0cac409363d7b0a6ca
d2: Enable quick calibration for pm8xxx_ccadc

Change-Id: I854be5addf1daa3164fea0233c9b9f4820fcfdd3
Merge remote-tracking branch 'github/cm-10.1' into lk-cm-merged
cpufreq: force cpu1 policy to match cpu0 when changing freq or gov

 * Thanks to Steve Loebrich for the initial implementation

Change-Id: I7fa2d531ebb671413de909ccade50f51e6158255
leanKernel v5.5.5

Change-Id: I37d92a7be5a232e75e2e04052e8b4d990cba48c0