8660 kernel supports in-kernel mpdecision

Change-Id: If2eef0746e4dff255097e6339bf07636b0830dcf
sepolicy : remove audio fw policy its in core sepolicy now

See : http://review.cyanogenmod.org/#/c/62219/

Change-Id: I42d0ab6e4eb24ea2f34e099a42d2c20456735bfe