Revert "rtc: m41t80: Clear oscillator fault bit during probe"
This reverts commit 206778f7.
When the OF bit is set, we want to ignore the stored value until it's overwritten by a new one because it's known to be invalid. The OF bit is being cleared in m41t80_rtc_set_time already, so once the kernel stores a valid value into RTC it can get read on next boot without issues.
Closes #258 (closed)