Update git submodules

* Update platform/external/perfetto from branch 'master'
  to bc7a9c2bb682f97e2c5666bf19ec0a742c26ae26
  - Make trace_to_text a non-host-only executable
    
    In the case of cross-compiling mac_arm64 from a
    mac_x86 host, we want to cross-compile trace_to_text
    in the same way we do for trace_processor_shell, traced
    etc.
    perfetto_host_executable should be used only for executables
    that are invoked by the build system (protoc, ipc_plugin etc).
    
    Bug: 218384527
    Change-Id: I19cae24cd1373c6f7bdad23290c86dcd393540c8