Move charging indication vertically on time tick

Before, a new translation was only calculated when the device enters
AOD, and then, during time tick, we would only move it 5px wich isn't
enough.
Now, the translation varies 5dps vertically on every time tick.

Fixes: 110888643
Test: take screenshots for N minutes and compare them
Change-Id: Ia3f239d669b83aad0d97d8d7a7f7374f4890777d