hal: Compilation fixes

 * Properly include path to kernel headers for postproc effects
 * Don't try to build SSR or Listen if QC_PROP_ROOT isn't set

Change-Id: I8f2a874bbbec09cea8eae423a82e6cc59d03f422
hal: Fix compilation with incall music disabled

Change-Id: I977766437664fc87add0469ca8af23a6eb74c57d
audio-caf: resurrect msm7x30 audio

Change-Id: I3b03c830a3183357d8fd2b626f032309fc7f7129
audio : Mute FM when ringtone is played from settings

- FM audio on speaker is getting mixed up with ringtone
  when it is played from settings.
- Fix is to mute FM audio by enabling the combo device for
  sonification strategy even if the speaker is force used
  for media.
  CRs-Fixed: 574271

Change-Id: Ic595f326d7409b4cb557f5f1edf8f3bf58ce60c8