media: atomisp: Convert comments to C99 initializers

The struct initalizers have been changed as recommended on
https://kernelnewbies.org/KernelJanitors/Todo
Also remove all the false, 0, and NULL members.

Link: https://lore.kernel.org/linux-media/20201214110156.6152-2-Philipp.Gerlesberger@fau.de


Co-developed-by: Andrey Khlopkov <ij72uhux@stud.informatik.uni-erlangen.de>
Signed-off-by: Andrey Khlopkov <ij72uhux@stud.informatik.uni-erlangen.de>
Signed-off-by: Philipp Gerlesberger <Philipp.Gerlesberger@fau.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>