gfio: initial support for hiding child options

If children depend on a parent, we want to hide them if the parent
isn't set. This is initial support for doing that.

Nevermind that it doesn't actually work, the hiding is buggy. And
it's only implemented for the check button type options for now.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 file changed