ipu: buffer pool: added horizontal 8-pixel alignment
ipu: buffer pool: added horizontal 8-pixel alignment

IPU cannot work with framebuffers that aren't 8-pixel aligned

Signed-off-by: Carlos Rafael Giani <d7d2e6b3863b2910d2ca34828bc651c85d88df6f@pseudoterminal.org>

commshare/gstreamer-imx,commshare/gstreamer-imx,Josuercuevas/gstreamer-imx,Josuercuevas/gstreamer-imx