V4L/DVB (12465): cx88: High resolution timer for Remote Controls

Patch solves problem of missed keystrokes on some remote controls,
as reported on http://bugzilla.kernel.org/show_bug.cgi?id=9637

 .

Signed-off-by: Andrzej Hajda <andrzej.hajda@wp.pl>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>