hal: Invert standard build flags

 * Always include these unless explicitly negated

Change-Id: I3931ef089dddcd9ac9f61d8b7e870cf916a4e47d

hal: Disable deprecated features

 * Disable deprecated in-call music feature
 * Don't automatically enable AUDIO_FEATURE_ENABLED_EXTN_FORMATS

Change-Id: Ib73b0ebadb102dada2c266f60f60238bb17679d7

policy_hal: Invert standard build flags

* Enable compress proxy in policy_hal since it's
  already enabled in hal & post_proc by default

Change-Id: I96de446990af415d909fb074c15e69f78f8df5b6