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>

drivers/staging/vt6655/hostap.h

@@ -55,4 +55,4 @@
 int vt6655_hostap_set_hostapd(struct vnt_private *, int val, int rtnl_locked);
 int vt6655_hostap_ioctl(struct vnt_private *, struct iw_point *p);
 
-#endif // __HOSTAP_H__
+#endif /*  __HOSTAP_H__ */