PTP class driver: Fix compiler warnings
ASI1230: ti814x generic ptp clock driver: Change scaled ns format for settick() to 8.24
ASI1230: TI814x PTP generic drv: Improve logging
PTP: Implement PTP_CLOCK_FREQ IOCTL to set a PTP clock's center frequency
ptp_ti814x_gen: Implement setfreq()

This implementation is limited in two ways:
- It does not apply the current freq adjutment to the new center frequency
- It only sets frequency with Hz granularity