Fusion R11 Lavender

Changelog for Fusion Kernel r11 Stable Build 20210403 :

* Merge latest 4.4.264 linux kernel update from google common

* Merge tag 'LA.UM.8.2.r2-04200-sdm660.0' for kernel from CAF

* Merge latest wireguard-linux-compat tag '1.0.2020403'

* Import Measured Energy Model from freqbench result for sdm660 (@FammasMaz)

* Import several gpu & irq affinity optimizations from @kerneltoast

* Import prlmk and switch to it from slmk for better RAM management (darkhz)

* Several adjustment for locking/lockdep,rcu & sched idle on latest upstream linux kernel (4.4.258),

 due a lot of futex source changes.

* Remove ANT GPIO checking driver (@tytydraco)