flo: use 4.8 toolchain

Change-Id: Ib9f3a31082fb56814f8de5b9236747c8a0199836
flo: Enable hardware audio codecs

Cherry-picked from 17290085bc104a0bd7d35bab6d3e8250c29da1f5

Change-Id: I9ce93f496cba524dd777732d4480005cb66e2f77