Merge changes Ib1ab0749,I3da1c525,Iea88fe7a,I2deeb024,I97ca9cff, ... into tm-qpr-dev

* changes:
  SDP: Add feature flag for serialization
  SDP: split the sdpu_process_pend_ccb
  SDP Use reference instead of int / pointer
  SDP code cleanup duplication
  SDP: TEST Handle race condition in HID SDP
  SDP: Handle race condition in HID SDP
  SDP: TEST Serialize sdp connections from profiles
  SDP: Serialize sdp connections from profiles/BT APP
  Prepare SDP for convergence