media: atomisp: remove kvmalloc/kvcalloc abstractions

The sh_css layer adds an abstraction for kvmalloc/kvcalloc.

Get rid of them. Most of the work here was done by this
small coccinelle script:

<cocci>
@@
expression size;
@@

- sh_css_malloc(size)
+ kvmalloc(size, GFP_KERNEL)

@@
expression n;
expression size;
@@

- sh_css_calloc(n, size)
+ kvcalloc(n, size, GFP_KERNEL)
</cocci>

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