more bringup stuffs

Done:
- set SE Linux to permissive for now
- remove Trebuchet overlay
- rename Torch overlay dir to Flashlight
- set sysfs toggle for Torch

Change-Id: I143753ce802c8a5317b19b2fdd68b8f51d4365e4
update sysfs path for LED Flash

Change-Id: I14e4fbc51c9f443375d9a0773cd7b55e3e15a0aa
add permissions for LED flash

this will actually use the sysfs toggle for flashlight,
not the slow java fallback method

Change-Id: I3069ccb229b1bd8fe39e8da3ec5aa1282a983669
remove unnecessary flags

Change-Id: I81faaeac70c8bb08d35d0078b623d15e729aded8
msm8974: Enable USB audio

* Use new QCOM USB audio path which uses the AFE proxy
* With offload

Change-Id: Id08dbfec1bffa1bc083109e8f81be6509abe1db5