disp: msm: sde: restart idle power collapse timeout every kickoff

Restart the timeline for the idle power collapse delayed work
timer for every resource control kickoff instead of only during
a power state change. This will prevent entering mode2 at
unexpected times during active scanouts.

Change-Id: I001157ff7e6b6246e26d537e30d8617cab9cb463
Signed-off-by: Steve Cohen <cohens@codeaurora.org>