ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. Fix up the 25ms delays here to use msleep() and
reduce the load on the hrtimer subsystem.

Link: http://lkml.org/lkml/2017/1/11/377Reviwed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NNicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>