Update git submodules

* Update platform/superproject from branch 'master'
  to 556be75cbc966b3028be1c4974a72c8830940a52
  - Update git submodules
    
    * Update system/memory/libmemtrack from branch 'master'
      to 984b70a27d9b8d7e89e24424e06f2dbea38b0f6f
      - Specify version for aidl_interface explicitly
        
        Bug: 150578172
        Test: m
        Change-Id: I5e7c15d048d145037d50c1d473e36c0c9a4d52c7
        

* Update platform/system/memory/libmemtrack from branch 'master'
  to 984b70a27d9b8d7e89e24424e06f2dbea38b0f6f
  - Specify version for aidl_interface explicitly
    
    Bug: 150578172
    Test: m
    Change-Id: I5e7c15d048d145037d50c1d473e36c0c9a4d52c7
    
2 files changed