staging: media: atomisp: Replace 'uint32_t' with kernel type u32.

Replaced 'uint32_t' with kernel type u32, to fix the checkpatch issue.

Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>