Update to Linux 5.8 and bring some nice improvements:
* Use geni for touch instead of CPU driven bitbang, this gives
noticeable performance gains in phosh when scrolling.
* Enable bluetooth (using firmware in updated firmware package), was
able to test bluetooth audio with bluetoothctl but phosh UI shows no
Bluetooth adapter.
* Add testing battery node using bq27541, battery always reported being
plugged in and at 100%.
* Fix UFS error spam due to a bug where writeboost is enabled for all
qcom devices - even though it isn't supported.
* Add quirk to wifi device to fix host capability request rather than
the dodgy driver edit that was used before.
* Minimise .config size to improve build times.
* Make schedutil the default governer
* Fix power button