Update git submodules

* Update trusty/kernel from branch 'master'
  to 2a1ffb238801a5e8ca866ce27741bd0ebbdeb58a
  - [lib][trusty][ipc] More UBSAN fixes
    
    Bug: 129300035
    Change-Id: I3658ace4026ccbbefb38cc22ba91992b25b0c11f
    
1 file changed