hal/policy_hal: Invert standard build flags

* Disable wearable feature by default
* Enable new samplerate by default since it's the default
  behaviour in CAF HAL matching latest kernel releases
* Enable compress voip and proxy in policy_hal since it's
  already enabled in hal & post_proc by default

Change-Id: I96de446990af415d909fb074c15e69f78f8df5b6