unicore32 time.c: change calculate method for clock_event_device

apply clockevents_calc_mult_shift() to get rid of
shift assignment and mult calculation for osmr0
  -- by advice with Thomas Gleixner

Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
This commit is contained in:
GuanXuetao 2011-02-17 17:50:43 +08:00
commit a913a8234b