Showing the period alway as microsecond quantities, since tick_hz is
assumed as 1_000_000 if the period is given by freq=xxx. If the period is
larger than 0xffffffff, the value is divided by 1000 and "000" is appended
in the display. That works for periods up to about 50 days.
Signed-off-by: robert-hh <robert@hammelrath.com>
9f1576f2ad