media: atomisp-mt9m114: adjust macro parameter name

The macro parameter name, sd, captures the field name in the third
argument of container_of.  Fortunately, the argument at all uses is
actually sd.  But change the macro parameter name anyway, for a little
added safety.

Link: https://lore.kernel.org/linux-media/20230315090904.20092-1-Julia.Lawall@inria.fr


Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>