Do this in the device tree... like GNexusParts used to be.

Revert "LunarTools:Move to a prebuilt app (2/3)"

This reverts commit ba68e6e0178f431659d53dbf5aee6f9bfe5cf2d2.

Change-Id: I30641ca09c941b954b2b2af08a4bb8ee359bf005