staging: vt6655: lines should not end with a parenthesis

Adjust code to fix the style issue – lines should not end with a
parenthesis.

Signed-off-by: Payal Kshirsagar <payal.s.kshirsagar.98@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>