Add virtual keyword to checkAndSetVolume to fix FM volume and add AudioPolicyManagerBase.h header

Change-Id: I40bb1395284c69b790e00d3d0ba90cea12f07418
Update routing strategy for FM and Speaker

Default policy manager doesn't allow force using of speaker for media

Change-Id: Ifb33b9f16bbf3d9cf07ce3be6b039185f0ac3e39
Fully compatible fm audio driver

Change-Id: I10cdc810cf1a87f54ee25c11a05cb09939c0a873
Allow 5 hidden apps

Change-Id: I70d055718f20b8570d28d680a237e43dc31647ae