ivi-shell: don't check for event_mask in update_prop
it might happen that we want to update props even though there was no property change. For example when an output is moved or resized.
Therefore, move the event_mask check out of update_prop. We can check it in commit_changes before calling update_prop
Signed-off-by: Emre Ucan eucan@de.adit-jv.com Signed-off-by: Rajendraprasad K J KarammelJayakumar.Rajendraprasad@in.bosch.com