dt-bindings: display: simple: Add KD116N21-30NV-A010 compatible

The KD116N21-30NV-A010 is a pretty standard eDP panel.  Add it to the
list of compatible strings.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200821083454.1.I61e6248813d797c9eeebfbb7019c713aa71c4419@changeid