hammerhead: Make SYSTEM owner of cpu online files

This is required for the Settings app to online cpus
before writing to cpufreq files.

Change-Id: I63530bfcf095a0fbc432a908272bc89bb1ad89eb
audio_effects: Add stereowide effect

Change-Id: I5238369a4b04d0061b51313a99edb05932fc927b
Enable gcc 4.8

Change-Id: I4fec10e41b2b676b9f70dba9e304e6833735c853
hammerhead: Enable lockscreen rotation

Change-Id: Ie5e2c2598a960140a831d02c000b37630e219665