drm/imx: ipuv3-plane: fix accidental partial revert of 8 pixel alignment fix

This fixes an accidental partial revert of commit 94dfec48
("drm/imx: Add 8 pixel alignment fix") during a rebase of
commit fc1e985b ("drm/imx: ipuv3-plane: add color encoding and range
properties").

Fixes: fc1e985b ("drm/imx: ipuv3-plane: add color encoding and range properties")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20210816131728.30987-1-p.zabel@pengutronix.de


Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>