Add enum_mbus_code ioctl so that user space can know what formats are supported to csi2rx. Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com> Reviewed-by: Julien Massot <julien.massot@collabora.com> Tested-by: Julien Massot <julien.massot@collabora.com> Reviewed-by: Jai Luthra <j-luthra@ti.com> Tested-by: Jai Luthra <j-luthra@ti.com> # [Test on sk-am62a] Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>