Move drm/bridge documentation to video/bridge.
Also, add proper documentation for gpios used by ptn3460.
Signed-off-by: NAjay Kumar <ajaykumar.rs@samsung.com>
Acked-by: NInki Dae <inki.dae@samsung.com>
Tested-by: NRahul Sharma <rahul.sharma@samsung.com>
Tested-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Tested-by: NSjoerd Simons <sjoerd.simons@collabora.co.uk>
Signed-off-by: NThierry Reding <treding@nvidia.com>