mac_via: fix 60Hz VIA1 timer interval
The 60Hz timer is initialised using timer_new_ns() meaning that the timer
interval should be measured in ns, and therefore its period is a thousand
times too short.
Use a define for the 60Hz timer period taking the more precise value as
documented in the Guide To The Macintosh Family Hardware.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <
20210311100505.22596-7-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>