gstreamer1.0-plugins-base: Fix IMXCameraApp image time cannot display issue.
IMXCameraApp: When Enabled "save time to image" item, preview,
find the time can not display completely.
As IPU need 8 pixels alignment, add one workaround in base text overlay
to generate 8 pixels alignment text video buffer. The side effect should
cause all text a little smaller.
Signed-off-by: Yuqing Zhu <b54851@freescale.com> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
