Update git submodules

* Update trusty/user/app/sample from branch 'master'
  to 7f5689885843d8308c1fef5c7e64bb1f077a8ee2
  - [hwkey] fix unit test that purports to derive a shared key, but does not
    
    Bug: None
    Change-Id: I0b70828edca5537cb601bdac7a1683065801e4a7
    
1 file changed