MLK-18535-13 dt-bindings: display: bridge: add sec-dsim bindings

commit ae7f5bf4240e880840a8aebf61bbabcdce224f3f from
https://github.com/nxp-imx/linux-imx



Add the device-tree bindings for the display bridge
Samsung MIPI DSIM on i.MX platforms.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>