Update git submodules

* Update trusty/kernel from branch 'master'
  to a0923b99996ef23bafaf95727a8f63f6b40e8df3
  - host_test: Allow building from kernel or user-space component
    
    SAVED_BUILDDIR is only set for xbin based components. If it is not set
    use BUILDDIR unstead as this points to the location we want for kernel
    components.
    
    Bug: 139900186
    Change-Id: I4cefc689a24e8b6a79df1cbeefe0c4de3e1812da
    
1 file changed