Set CONFIG_NEWLIB_TIME_SYSCALL_USE_HRT to enable to force CONFIG_ESP_TIME_FUNCS_USE_RTC_TIMER to disable
and hence prevent the following tests from being executed:
- Timestamp after abort is correct in case RTC & High-res timer have + big error
- Timestamp after restart is correct in case RTC & High-res timer have + big error
- Timestamp after restart is correct in case RTC & High-res timer have - big error