linux-phytec-ti

[media] bdisp: add DT bindings documentation

This adds DT binding documentation for STMicroelectronics bdisp driver.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>