Merge changes Ifad48ac1,Iec6e7550,I68ff2112,Ibb875781,Iae859fcc, ...

* changes:
  BTM_SEC_OUT_FLAGS used to include authorized
  this used to check for authorized
  Remove always false expressions
  This expression is also never true
  This condition is never true
  Simpify boolean expression
  Remove useless redefinition BTM_SEC_FLAG_AUTHORIZED
  BTM_SEC_OUT_AUTHENTICATE is never set, only checked or removed
  BTM_SEC_IN_AUTHORIZE is never set, only checked or removed
  Remove BTA_AV_WITH_AVCTP_AUTHORIZATION
  BTA_SEC_AUTHENTICATE does not include authorization
  Flatten bta_av_cb.sec_mask
  The security mask is always BTA_SEC_AUTHENTICATE
  Internalize BTA_AvEnable's security mask
  Flatten BTA_SEC_AUTHORIZE

diff --cc stack/btm/btm_sec.cc
Simple merge