boards: adi: max32: Enable counter RTC

This commit enables counter RTC for following boards

- MAX32662 EVKIT
- MAX32655 EVKIT
- MAX32655 FTHR
- MAX32666 FTHR
- MAX32666 EVKIT
- MAX32670 EVKIT
- MAX32672 FTHR
- MAX32672 EVKIT
- MAX32690 EVKIT

Co-authored-by: Sadik Ozer <sadik.ozer@analog.com>
Co-authored-by: Maureen Helm <maureen.helm@analog.com>
Signed-off-by: Okan Sahin <okan.sahin@analog.com>