CHROMIUM: drm/rockchip: use helper function when cancelling an event

So it will get unlinked from pending events list.

BUG=chrome-os-partner:59696
TEST=boot kevin

Change-Id: I1cc5ce093917f35da6b5a056b317a03e3b6d242b
Signed-off-by: Dominik Behr <dbehr@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/410123
Commit-Ready: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: St├ęphane Marchesin <marcheu@chromium.org>
(cherry picked from commit 492f2420eb92fe294ef769945c127bb88597871b)
Reviewed-on: https://chromium-review.googlesource.com/411467
Reviewed-by: Douglas Anderson <dianders@chromium.org>
1 file changed