staging: dgnc: dgnc_driver.c Blank line before }

Make suggested checkpatch modification for
CHECK: Blank lines aren't necessary before
a close brace '}'

Signed-off-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.c

@@ -579,7 +579,6 @@ static void cleanup(bool sysfiles)
 		dgnc_cleanup_tty(dgnc_board[i]);
 		dgnc_cleanup_board(dgnc_board[i]);
 	}
-
 }
 
 /*