drm: panel: simple: Correct connector type for Starry KR070PE2T

The Starry KR070PE2T panel is a DPI panel, not and LVDS panel. Fix its
connector type.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Pascal Roeleven <dev@pascalroeleven.nl>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200629233320.8774-2-laurent.pinchart+renesas@ideasonboard.com