mm-video: vdec: Align width for 420 planar and semiplanar formats

GPU composition needs the width in client buffers to be aligned by
16 bytes for faster color conversion operations and hence aligning
the width in video component. Without the change color converted
output has green lines at the corners for resolutions which has
width not aligned to 16 bytes.

Change-Id: Id3b053f70faeb231d021bae8213715ece83affaf
1 file changed