Switch back to ICS audio HAL

Change-Id: I6c3605963f2b0af8a8fafccd0506e0f923d2d61e
Change name of kernel dir

Change-Id: Ie596c0089fe96fc012804b110e400423816b8246
Don't build audio policy

Change-Id: Iaf8f7dda5cf55f5be4d3ef93afc77bdcfd79ccff
Change kernel toolchain

Change-Id: I5a29d90097714cc9ca807961349a061d5ce4d1a8