staging: dgnc: fix blank line after '{' warnings.

Remove blank lines between open brace and comment.
Remove blank lines after comment in line with the rest of the comments
of the file.

Signed-off-by: Fernando Apesteguia <fernando.apesteguia@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>