staging: dgnc: Fixed line over 80 characters long

This is a patch that fixes line over 80 characters coding style
warning detected by checkpatch.pl.

WARNING: line over 80 characters

Signed-off-by: Anjali Menon <cse.anjalimenon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>