Update git submodules

* Update system/keymaster from branch 'master'
  to b963f5e6b993b81df7f8ecfbff3c08a810a49404
  - Merge "Change KeyFactory context args to references."
  - Change KeyFactory context args to references.
    
    Where context arguments are not optional and immediately dereferenced,
    change them from pointers to references.
    
    Test: Build
    Bug: 171846199
    Change-Id: Ia0eba5110418d2f4d5f79bff46d61ad32470ee98
    

* Update trusty/user/app/keymaster from branch 'master'
  to abf4a0676ffdddc6b1cd40104b753b72d45eba05
  - Change KeyFactor context args to references.
    
    Where context arguments are not optional and immediately dereferenced,
    change them from pointers to references.
    
    Test: Build
    Bug: 171846199
    Change-Id: I7481edd1944a44671e62d3fc3b4c7e73ca21eee7
    
2 files changed