Merge "Use the exported log severity characters." into main

static void UiLogger(android::base::LogId log_buffer_id, android::base::LogSeverity severity,

                     const char* tag, const char* file, unsigned int line, const char* message) {

  android::base::KernelLogger(log_buffer_id, severity, tag, file, line, message);

  static constexpr auto&& log_characters = "VDIWEF";

  if (severity >= android::base::ERROR && ui != nullptr) {

    ui->Print("ERROR: %10s: %s\n", tag, message);

  } else {

    fprintf(stdout, "%c:%s\n", log_characters[severity], message);

    fprintf(stdout, "%c:%s\n", android::base::kSeverityChars[severity], message);

  }

}