endeavoru: Update recovery

* Use binaries from 4.19.707.3 HTC ROM.
* Remove unused calibration and power_test stuff.
* Don't start recovery service in offmode_charging mode.
  The recovery was usable previously! One just couldn't see anything.
* Add HTCs embedded logging daemon that logs some stuff to /devlog

Change-Id: Ic4d41d224dc2ee34d909e5c14e7b090e01ee8665