staging: vt6656: removed parenthesis from return statement

parenthesis is not required in return statement since its
not a fucntion, hence remove parentheses to comply with
linux coding style

Signed-off-by: Nandini Hanumanthagowda <nandu.hgowda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>