Update git submodules

* Update trusty/user/app/sample from branch 'master'
  to 9a33518472a9a7a18e9a2c647668aa73be5b7635
  - [spi][swspi-test] Fix for SPI looopback test
    
    TX and RX buffers point to the same location, i.e. we need to finish
    using TX before it's overwritten by RX value.
    
    Bug: None
    Test: com.android.trusty.swspi.test
    Change-Id: I838baf2c1c6df834c0980c32ea00d2f8d623b9e9
    
1 file changed