lshal: add docs to Status.

    OK                                      = 0,

    // Return to Lshal::main to print help info.

    USAGE                                   = 1 << 0,

    // no service managers

    NO_BINDERIZED_MANAGER                   = 1 << 1,

    NO_PASSTHROUGH_MANAGER                  = 1 << 2,

    // general error in getting information from the three sources

    DUMP_BINDERIZED_ERROR                   = 1 << 3,

    DUMP_PASSTHROUGH_ERROR                  = 1 << 4,

    DUMP_ALL_LIBS_ERROR                     = 1 << 5,

    // I/O error in reading files

    IO_ERROR                                = 1 << 6,

    // Interface does not exist (IServiceManager::get fails)

    NO_INTERFACE                            = 1 << 7,

    // Transaction error from hwbinder transactions

    TRANSACTION_ERROR                       = 1 << 8,

};

using Status = unsigned int;