Input: ucb1400_ts - use sched_setscheduler()

Fix Philips UCB1400 driver to use sched_setscheduler() instead of setting
the fields of task_struct directly.

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>