Update git submodules

* Update platform/system/bt from branch 'master'
  to 2f667ebfbfc90c682caef70eade873cd6b419dca
  - Merge "Shim ACL: Implement OnLocalAddressUpdate"
  - Shim ACL: Implement OnLocalAddressUpdate
    
    Tag: #gd-refactor
    Bug: 181090402
    Test: gd/cert/run
    Test: manual, bond from remote device via nRF app
    Change-Id: I3e570d0459d3d5fe6315b3416b7253aa9d9f1422
    
1 file changed