drm/mediatek: dpi: Remove output format of YUV

stable inclusion
from stable-v5.10.137
commit c47d69ed5667e698c87f0b4c867ceac7fc09a5a6
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c47d69ed5667e698c87f0b4c867ceac7fc09a5a6



--------------------------------

[ Upstream commit c9ed0713 ]

DPI is not support output format as YUV, but there is the setting of
configuring output YUV. Therefore, remove them in this patch.

Fixes: 9e629c17 ("drm/mediatek: Add DPI sub driver")
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220701035845.16458-5-rex-bc.chen@mediatek.com/


Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>