drm/i915: Round to closest when computing the VGA dotclock for LPT-H

Bspec says we should round to closest when computing the LPT-H VGA
dotclock, so let's do that.

v2: Fix typo in commit message (Paulo)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449260421-14243-1-git-send-email-ville.syrjala@linux.intel.com
1 file changed