DT binding documentation for ISC driver.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSongjun Wu <songjun.wu@microchip.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>