media: amphion: tell and handle contiguous and non contiguous format

Driver should tell the number of memory planes and component planes.
the amphion vpu support non contiguous planes,
but for compatibility with other device
that only support contiguous planes.
driver can add support for contiguous planes in the same time.
Then the mem_planes can be different from the comp_planes.
driver need to handle buffer according mem_planes and comp_planes.

So driver can support NV12 and NV12M.

Signed-off-by: Ming Qian <[email protected]>
Reviewed-by: Tommaso Merciai <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

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