media: platform: mtk-mdp3: add support for parallel pipe to improve FPS

media: platform: mtk-mdp3: add support for parallel pipe to improve FPS

In some chips, MDP3 has the ability to utilize two pipelines to
parallelly process a single frame.
To enable this feature, multiple CMDQ clients and packets need to
be configured at the same time.

Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>