The current code evaluates `pyb.RTC().datetime()` resulting in a remote
side exception, as `pyb` is not defined on most ports (only stm32).
The code should evaluate `machine.RTC().datetime()` and hence return the
current time.
Signed-off-by: rufusclark <50201718+rufusclark@users.noreply.github.com>
Signed-off-by: Damien George <damien@micropython.org>