mm_video: vidc: Update buffer geometry with stride and scanline

Update buffer geometry dimensions using stride and snanline.
Earlier it was updated conditionally to handle downscalar case.
Now component is fetching all updated dimensions in case of
crop event, so stride and scanline can be used for the same.

Change-Id: If44a6df8498bff2ce39c9428b3708adbee7b8542