The custom ROI position was not set if it's set before waylandsink creation.
[Version] 0.10.81
[Profile] Common
[Issue Type] Bug fix
[Dependency module] N/A
[Dependency commit] N/A
[Test] [M(T) - Boot=(OK), sdb=(OK), Home=(OK), Touch=(OK), Version=tizen-mobile_20161016.2]
Change-Id: I22c137944e48fb53bf982ce95daaefa9133813d0
Signed-off-by: Jeongmo Yang <jm80.yang@samsung.com>