mach-netx/time.c: codingstyle cleanup

To prevent cluttering the next patches with noop noise, do the cleanup
in this separate patch:

 - use tab to indent
 - break comments before column 80

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>