staging: vt6655: fix do not use // c99 comments.

This patch fixes "do not use // C99 comments" checkpatch.pl errors in
hostap.h

Signed-off-by: Melike Yurtoglu <aysemelikeyurtoglu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>