klte-common: thermal-engine does not run without libthermalioctl.so

Adds it to proprietary files, because thermal-engine seems like it might be a good thing to have

Change-Id: Icde780f0fbcdceb35a34af1ffccb57879d4a69a5
Merge "klte-common: thermal-engine does not run without libthermalioctl.so" into kitkat