media: atomisp: Fix spelling mistakes in queue.c

codespell reported following spelling mistake
in queue.c as below:

'''
./runtime/queue/src/queue.c:126: uncessary ==> unnecessary
./runtime/queue/src/queue.c:183: uncessary ==> unnecessary
'''
This patch fixes these spelling mistakes.

Link: https://lore.kernel.org/r/20231223071157.81082-1-kdipendra88@gmail.com

Signed-off-by: Dipendra Khadka <kdipendra88@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: atomisp: Remove redundant assignments to variables

There are several variables that are being initialized with values
that are never read, the assignment are redundant and can be removed.
Cleans up cppcheck unreadVariable warnings.

Link: https://lore.kernel.org/r/20231219143929.367929-1-colin.i.king@gmail.com

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

media: atomisp: Write function decleration in one line

CHECK:OPEN_ENDED_LINE: Lines should not end with a '('
WARNING:LEADING_SPACE: please, no spaces at the start of a line
Avoid these errors by writing the function decleration in one line.

Link: https://lore.kernel.org/linux-media/20201214110358.7102-12-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>

media: atomisp: add SPDX headers

This driver is licensed under GPL 2.0, as stated inside their
headers.

Add the proper tag there. We should probably latter cleanup
the reduntant licensing text, but this could be done later,
after we get rid of other abstraction layers.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of an error abstraction layer

There is an abstraction layer there meant to convert to
the Linux standard error codes. As the driver now use
such errors everywhere. we can get rid of this.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: cleanup directory hierarchy

This driver has very long directories without a good
reason (IMHO). Let's drop two directories from such hierarchy,
in order to simplify things a little bit and make the dir
output a bit more readable.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>