dt-bindings: display: convert jdi,lt070me05000 to DT Schema

v2:
  - drop address in dsi node in example (Rob)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Vinay Simha BN <simhavcs@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Vinay Simha BN <simhavcs@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200408195109.32692-13-sam@ravnborg.org