staging: vt6656: int.c: We don't use spaces between a cast and the variable being converted

Remove spaces between casts and variables from
drivers/staging/vt6656/int.c .

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>