Gfx-display: fix issue of screen mess on HDMI during MT call

Gfx-display: fix issue of screen mess on HDMI during MT call

BZ: 34312

This issue is because under the scenario of playing video while receiving
a MT call, the size and stride of HDMI plane are set to be the video size.
When restore the surface to be init_screen, as the size and stride are not
correct, it will show the messy picture on HDMI.
Fix this issue by adding the restore of init_screen size and stride.

Change-Id: I0e757ed1d9788fca2b10958e9814cd2ed72f9d21
Signed-off-by: Lei Zhang <lei.zhang@intel.com>
Signed-off-by: Geng Xiujun <xiujun.geng@intel.com>
Signed-off-by: Lei Zhang <lei.zhang@intel.com>
Reviewed-on: http://android.intel.com:8080/47713
Reviewed-by: Ai, Ke <ke.ai@intel.com>
Reviewed-by: Xu, Randy <randy.xu@intel.com>
Tested-by: Tong, BoX <box.tong@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>