post_proc: Fix improper datatype of EQ preset band level value

unsigned int causes negative band level turn out to be extreme large
value, which results in EQ works abnormally due to unexpected parameter
sent.

Change-Id: I81120c604f4e9f23b25d5a45a7b0294fea63d207
CRs-Fixed: 696825
hal: Add/remove speaker protection usecase to/from global list

Audio hal maintains link list that contains all active audio/voice
usecases. When usecase is being started it shoule be be added to
list and removed when usecase is disabled.
Speaker protection usecases were not being added to the list which was
causing the speaker calibration pre-emption to fail. Change updates the
usecase list and ensures that device lock is not acquired when
calibration is being pre-empted

CRs-fixed: 688972
Change-Id: I377346243ceaaebfcf80673f367dbd8bb83d5381
hal: Speaker protection pre-emption fixes

Speaker protection module should acquire the device lock for all global
operations. This change will ensure that the pre-conditions required for
calibration will be met and if any audio/voice usecase is started when
speaker calibration is being done,speaker protection thread should
cancel the calibration.

Change-Id: I0d5fa23657161ec971e851944a0045a01d8248ea
CRs-fixed: 688972
hal: add the stream to uc_info for speaker protection enablement

Stream was null causing data abort when speaker
protection is enabled. Set it to primary_output in case
of playback and set device in case of recording.

Change-Id: I4b532ad7d76adab75e1ef0719eaba197eb3d9379