dt-bindings: display: move DSI panels to panel-simple-dsi

Tomi noticed that several DSI panels was wrongly
described in panel-simple.yaml.
Move them to panel-simple-dsi.yaml where they belong.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408195109.32692-37-sam@ravnborg.org