Merge changes Id30b0dc4,I27168e1f,Id6a4d6e2,I9c011afa,I5a19a21c, ...

* changes:
  Fold security level calls into hidd_conn_reg
  Fold HID_DevSetSecurityLevel into device registration
  Fold security level into HID_DevSetSecurityLevel
  Fold security mask into AVCT_Register
  Remove sys id param from bta_ar_dereg_avdt
  Remove sys id param from bta_ar_reg_avdt