[Bionic SRU][Patch 0/3] CPPC: bug fixes

[Manoj Iyer]

Please consider the following patch set for SRU in Bionic for CPPC bug 
fixes from upstream, these patches are clean cherry-picks. 

CPPC bug fixes: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796949

The CPPC feature needs to be explicitly enabled in Firmware (default is
disabled) for these patches to be in effect. 

I have build a kernel and regression tested on Cavium Thunder X2 CN99XX 
system. For test kernel, and detailed test results. please refer to the 
comments in the bug report.