Staging: media: atomisp: Add blank line after declarations

This patch adds a blank line after declarations to
improve code readability.

Issue find by checkpatch.pl script.
WARNING: Missing a blank line after declarations

Signed-off-by: Georgiana Chelu <georgiana.chelu93@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>