With the hvdcp module from stock .291 rom, I was able to enable Quick Charge 2.0 on latest RR (Resurrection Remix) rom. Our phones will now charge at least 2 times faster.
Please note that I only tested this with latest RR rom but...
Whole new kernel is coming very soon.
If you can not download the file you need, let me know. Under the link unpacked system files. STOCK .291
Also this one from Stock LP
I'm planning to release a fully customized, upstreamed OREO kernel sometime soon. Yes, it will support QC of course. Please stay tuned.
Just go back to the old "alpha2" APK and "sdk21-arm-20150430" framework.
It all good.
Using Sony Xperia™ Z2 with 5.0.2.
Edit: Files are uploaded.