Enable Tunnel Playback for msm8974

Change-Id: I3ca4e06f74a4e994cedaba16df3bd9b20c95bac7
Added ifndef ICS_AUDIO_BLOB around non-existent functions (3/3)

For older audio blobs where is_source_active and is_stream_active_remotely
doesn't exist, receiving a notification and dumpsys crashes the audio service.

Change-Id: I554f00ba7f171d2ea91627cae2281623383b3ca7
Add camera parameters for htc evo 3D. (1/2)

Use BOARD_HTC_3D_SUPPORT to enable.

Change-Id: I28fa3f1586071bcc78b8e887bbbf699d338a0ceb
audioflinger: Fix delay in enabling effect for LPA

 - Enable/disable of effects for LPA is taking time
 - Enable notification is not sent to effects thread till
   configure is called on each effect with isForLPA flag
   set to true, this happens only when applyEffcts is
   called in write of directoutput thread, so till that time
   effects are not applied and there is a delay in effects
   getting applied.
 - Insted of checking effcts LPA flag check the effectchain's
   LPA flag while sending notification to effects thread

Change-Id: I8d7559a60e5c6769d72022517daa05c84df54885
CRs-Fixed: 525510
audioflinger: Fix pops in LPA while effects are applied

 -Issue: LPA playback while effect are applied, has pops/noise
  as below scenarios
  1) LPA Playback + taking snapshot with camera
  2) LPA Playback + changing media volume from settings app
  3) LPA plaback after non-LPA playback
 -Rootcause:Effects meant for LPA are getting applied in
  normal playback path
 -Fix: In threadloop of mixerthread if current effect
  chain is equal to LPAeffectchain, don't apply effects.

CRs-Fixed: 526799

Change-Id: Ic255ef2db81545abd119633e8fc6a7bae5d2f38c
ffmpeg integration