msm8974: [HACK] Restore combined primary audio path

 * The underrun (click/pop) seems to still be possible
   when using FAST output, and happens most often
   when playing a ringtone out of suspend.

Change-Id: Icd30aae31f0c911a142e12c09f701be383896cb1
msm8974: Disable multiple offload support

 * Disable multiple offload support in the stable branch until we
   fix the issue with the offload visualizer. The issue is that
   the visualizer is hardcoded for a single AFE_PCM_RX path, and
   we need to pass this up from the HAL for multiple offload.
 * Revert this when the issue is fixed, as multi-offload can improve
   power consumption in certain use cases.

Change-Id: Ife712dfe47d24db361949d3736156276f5f6e0a9