Add offload properties

* Set fragment size (same as default)
* Enable gapless playback with offloaded streams
* Enable offloading for AV (but not streaming AV!)

Change-Id: I09db4fadcf9b198a359f36217ff1d04feee9783c
Fix up cpu settings

* Disable userspace input boost
* Fix thermal-engine.conf for perf compat
* Enable full idle power collapse on all cores
* And don't let mpdecision mess with any of it

Change-Id: Ib0b4c83e912544ab9846665fa2e7eb738d255aab