change(uart): Use low power HIRC8 for uart clock

This is in preparation of changing the system clock dynamically. The UART needs a stable clock and AFAIK this clock is specifically designed to work well with the UART. It can stays constant during (light) sleep phases.

assigned to @rahix

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

Looks good to me. Only thing we need to keep in mind is that calling Console_Shutdown() will now affect other peripherals using this clock as well.

approved this merge request

merged

mentioned in commit e3a22247

added 3-Epicardium label