msm: display: make pan display as a non-blocking call

Schedule a workqueue, do the current job in the workqueue handler.
Block the second entry if the first one has not finished

Change-Id: Idb8c15ec0e11e252cec88a6eebd532cee5e4e1d4
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>
2 files changed